31112330012 has 12 divisors (see below), whose sum is σ = 54449206056. Its totient is φ = 15555414000.

The previous prime is 31112330009. The next prime is 31112330027. The reversal of 31112330012 is 21003321113.

It is a congruent number.

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, 88739 + ... + 264762.

It is an arithmetic number, because the mean of its divisors is an integer number (4537433838).

Almost surely, 2^31112330012 is an apocalyptic number.

It is an amenable number.

31112330012 is a deficient number, since it is larger than the sum of its proper divisors (23336876044).

31112330012 is a wasteful number, since it uses less digits than its factorization.

31112330012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375508 (or 375506 counting only the distinct ones).

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

Adding to 31112330012 its reverse (21003321113), we get a palindrome (52115651125).

The spelling of 31112330012 in words is "thirty-one billion, one hundred twelve million, three hundred thirty thousand, twelve".