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1031241225 = 352723412083
BaseRepresentation
bin111101011101110…
…111111000001001
32122212110111000110
4331131313320021
54102444204400
6250155024533
734361256120
oct7535677011
92585414013
101031241225
1148a121883
1224943b149
13135858111
149ad60ab7
1560802e50
hex3d777e09

1031241225 has 96 divisors (see below), whose sum is σ = 2083866624. Its totient is φ = 439718400.

The previous prime is 1031241217. The next prime is 1031241229. The reversal of 1031241225 is 5221421301.

It is not a de Polignac number, because 1031241225 - 23 = 1031241217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1031241229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 494034 + ... + 496116.

It is an arithmetic number, because the mean of its divisors is an integer number (21706944).

Almost surely, 21031241225 is an apocalyptic number.

1031241225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1031241225 is an abundant number, since it is smaller than the sum of its proper divisors (1052625399).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1031241225 is a wasteful number, since it uses less digits than its factorization.

1031241225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2167 (or 2162 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1031241225 is about 32112.9448198075. The cubic root of 1031241225 is about 1010.3071395409.

Adding to 1031241225 its reverse (5221421301), we get a palindrome (6252662526).

The spelling of 1031241225 in words is "one billion, thirty-one million, two hundred forty-one thousand, two hundred twenty-five".

Divisors: 1 3 5 7 15 21 23 25 35 41 69 75 105 115 123 161 175 205 287 345 483 525 575 615 805 861 943 1025 1435 1725 2083 2415 2829 3075 4025 4305 4715 6249 6601 7175 10415 12075 14145 14581 19803 21525 23575 31245 33005 43743 47909 52075 70725 72905 85403 99015 143727 156225 165025 218715 239545 256209 335363 364525 427015 495075 597821 718635 1006089 1093575 1197725 1281045 1676815 1793463 1964269 2135075 2989105 3593175 5030445 5892807 6405225 8384075 8967315 9821345 13749883 14945525 25152225 29464035 41249649 44836575 49106725 68749415 147320175 206248245 343747075 1031241225