31321112012310 has 64 divisors (see below), whose sum is σ = 77725072281600. Its totient is φ = 8069373536640.

The previous prime is 31321112012293. The next prime is 31321112012413. The reversal of 31321112012310 is 1321021112313.

It is a super-2 number, since 2×31321112012310² (a number of 28 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27555297 + ... + 28669436.

It is an arithmetic number, because the mean of its divisors is an integer number (1214454254400).

Almost surely, 2^{31321112012310} is an apocalyptic number.

31321112012310 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31321112012310 is an abundant number, since it is smaller than the sum of its proper divisors (46403960269290).

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

31321112012310 is a wasteful number, since it uses less digits than its factorization.

31321112012310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56225373.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 31321112012310 its reverse (1321021112313), we get a palindrome (32642133124623).

The spelling of 31321112012310 in words is "thirty-one trillion, three hundred twenty-one billion, one hundred twelve million, twelve thousand, three hundred ten".