31112323012 has 12 divisors (see below), whose sum is σ = 54460796796. Its totient is φ = 15552095360.

The previous prime is 31112323001. The next prime is 31112323093. The reversal of 31112323012 is 21032321113.

It can be written as a sum of positive squares in 2 ways, for example, as 20801139076 + 10311183936 = 144226^2 + 101544^2 .

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, 999289 + ... + 1029952.

It is an arithmetic number, because the mean of its divisors is an integer number (4538399733).

Almost surely, 2^31112323012 is an apocalyptic number.

It is an amenable number.

31112323012 is a deficient number, since it is larger than the sum of its proper divisors (23348473784).

31112323012 is a wasteful number, since it uses less digits than its factorization.

31112323012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033078 (or 2033076 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31112323012 its reverse (21032321113), we get a palindrome (52144644125).

The spelling of 31112323012 in words is "thirty-one billion, one hundred twelve million, three hundred twenty-three thousand, twelve".