31310023113312 has 24 divisors (see below), whose sum is σ = 82188810672696. Its totient is φ = 10436674371072.

The previous prime is 31310023113311. The next prime is 31310023113373. The reversal of 31310023113312 is 21331132001313.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×31310023113312² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31310023113311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163073036953 + ... + 163073037144.

It is an arithmetic number, because the mean of its divisors is an integer number (3424533778029).

Almost surely, 2^{31310023113312} is an apocalyptic number.

31310023113312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31310023113312 is an abundant number, since it is smaller than the sum of its proper divisors (50878787559384).

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

31310023113312 is a wasteful number, since it uses less digits than its factorization.

31310023113312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326146074110 (or 326146074102 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 31310023113312 its reverse (21331132001313), we get a palindrome (52641155114625).

The spelling of 31310023113312 in words is "thirty-one trillion, three hundred ten billion, twenty-three million, one hundred thirteen thousand, three hundred twelve".