31212311112332 has 72 divisors (see below), whose sum is σ = 66434802336000. Its totient is φ = 12769466482080.

The previous prime is 31212311112317. The next prime is 31212311112361. The reversal of 31212311112332 is 23321111321213.

It is a super-2 number, since 2×31212311112332² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4688144 + ... + 9187127.

It is an arithmetic number, because the mean of its divisors is an integer number (922705588000).

Almost surely, 2^{31212311112332} is an apocalyptic number.

It is an amenable number.

31212311112332 is an abundant number, since it is smaller than the sum of its proper divisors (35222491223668).

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

31212311112332 is a wasteful number, since it uses less digits than its factorization.

31212311112332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13875811 (or 13875802 counting only the distinct ones).

The product of its digits is 1296, while the sum is 26.

Adding to 31212311112332 its reverse (23321111321213), we get a palindrome (54533422433545).

The spelling of 31212311112332 in words is "thirty-one trillion, two hundred twelve billion, three hundred eleven million, one hundred twelve thousand, three hundred thirty-two".