31312311332 has 12 divisors (see below), whose sum is σ = 54837847680. Its totient is φ = 15644354856.

The previous prime is 31312311311. The next prime is 31312311367. The reversal of 31312311332 is 23311321313.

It is a super-2 number, since 2×31312311332² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31312311298 and 31312311307.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2944232 + ... + 2954847.

It is an arithmetic number, because the mean of its divisors is an integer number (4569820640).

Almost surely, 2^31312311332 is an apocalyptic number.

It is an amenable number.

31312311332 is a deficient number, since it is larger than the sum of its proper divisors (23525536348).

31312311332 is a wasteful number, since it uses less digits than its factorization.

31312311332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5900410 (or 5900408 counting only the distinct ones).

The product of its digits is 972, while the sum is 23.

Adding to 31312311332 its reverse (23311321313), we get a palindrome (54623632645).

The spelling of 31312311332 in words is "thirty-one billion, three hundred twelve million, three hundred eleven thousand, three hundred thirty-two".