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1031020313 = 19271200237
BaseRepresentation
bin111101011101000…
…001111100011001
32122212001020222112
4331131001330121
54102420122223
6250150202105
734356346061
oct7535017431
92585036875
101031020313
11489a90904
12249353335
131357ab6bb
149ad043a1
15607ac778
hex3d741f19

1031020313 has 8 divisors (see below), whose sum is σ = 1089294720. Its totient is φ = 973146960.

The previous prime is 1031020307. The next prime is 1031020349. The reversal of 1031020313 is 3130201301.

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 1031020313 - 210 = 1031019289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031020363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94970 + ... + 105267.

It is an arithmetic number, because the mean of its divisors is an integer number (136161840).

Almost surely, 21031020313 is an apocalyptic number.

It is an amenable number.

1031020313 is a deficient number, since it is larger than the sum of its proper divisors (58274407).

1031020313 is a wasteful number, since it uses less digits than its factorization.

1031020313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200527.

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

The square root of 1031020313 is about 32109.5050257708. The cubic root of 1031020313 is about 1010.2349918854.

Adding to 1031020313 its reverse (3130201301), we get a palindrome (4161221614).

The spelling of 1031020313 in words is "one billion, thirty-one million, twenty thousand, three hundred thirteen".

Divisors: 1 19 271 5149 200237 3804503 54264227 1031020313