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1031230031 = 13671183961
BaseRepresentation
bin111101011101110…
…101001001001111
32122212102220122212
4331131311021033
54102443330111
6250154501035
734361211356
oct7535651117
92585386585
101031230031
1148a114427
1224943477b
13135852cb0
149ad5a99d
15607ee98b
hex3d77524f

1031230031 has 8 divisors (see below), whose sum is σ = 1127131824. Its totient is φ = 937696320.

The previous prime is 1031230027. The next prime is 1031230033. The reversal of 1031230031 is 1300321301.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1031230031 - 22 = 1031230027 is a prime.

It is a super-5 number, since 5×10312300315 (a number of 46 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1031229988 and 1031230015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031230033) 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 7 ways as a sum of consecutive naturals, for example, 591110 + ... + 592851.

It is an arithmetic number, because the mean of its divisors is an integer number (140891478).

Almost surely, 21031230031 is an apocalyptic number.

1031230031 is a deficient number, since it is larger than the sum of its proper divisors (95901793).

1031230031 is a wasteful number, since it uses less digits than its factorization.

1031230031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184041.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 1031230031 is about 32112.7705282493. The cubic root of 1031230031 is about 1010.3034839400.

Adding to 1031230031 its reverse (1300321301), we get a palindrome (2331551332).

The spelling of 1031230031 in words is "one billion, thirty-one million, two hundred thirty thousand, thirty-one".

Divisors: 1 13 67 871 1183961 15391493 79325387 1031230031