31312523265 has 16 divisors (see below), whose sum is σ = 52278300288. Its totient is φ = 15973924736.

The previous prime is 31312523251. The next prime is 31312523269. The reversal of 31312523265 is 56232521313.

It is a cyclic number.

It is not a de Polignac number, because 31312523265 - 2⁸ = 31312523009 is a prime.

It is a super-2 number, since 2×31312523265² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31312523269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45380124 + ... + 45380813.

It is an arithmetic number, because the mean of its divisors is an integer number (3267393768).

Almost surely, 2^31312523265 is an apocalyptic number.

It is an amenable number.

31312523265 is a deficient number, since it is larger than the sum of its proper divisors (20965777023).

31312523265 is a wasteful number, since it uses less digits than its factorization.

31312523265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90760968.

The product of its digits is 32400, while the sum is 33.

The spelling of 31312523265 in words is "thirty-one billion, three hundred twelve million, five hundred twenty-three thousand, two hundred sixty-five".