31312012310 has 16 divisors (see below), whose sum is σ = 56518624800. Its totient is φ = 12489915456.

The previous prime is 31312012301. The next prime is 31312012321. The reversal of 31312012310 is 1321021313.

It is a super-2 number, since 2×31312012310² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 4357415 + ... + 4364594.

It is an arithmetic number, because the mean of its divisors is an integer number (3532414050).

Almost surely, 2^31312012310 is an apocalyptic number.

31312012310 is a deficient number, since it is larger than the sum of its proper divisors (25206612490).

31312012310 is a wasteful number, since it uses less digits than its factorization.

31312012310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8722375.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31312012310 its reverse (1321021313), we get a palindrome (32633033623).

The spelling of 31312012310 in words is "thirty-one billion, three hundred twelve million, twelve thousand, three hundred ten".