31120333012 has 12 divisors (see below), whose sum is σ = 54464429376. Its totient is φ = 15559067480.

The previous prime is 31120332983. The next prime is 31120333021. The reversal of 31120333012 is 21033302113.

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, 209314 + ... + 325657.

It is an arithmetic number, because the mean of its divisors is an integer number (4538702448).

Almost surely, 2^31120333012 is an apocalyptic number.

It is an amenable number.

31120333012 is a deficient number, since it is larger than the sum of its proper divisors (23344096364).

31120333012 is a wasteful number, since it uses less digits than its factorization.

31120333012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549518 (or 549516 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31120333012 its reverse (21033302113), we get a palindrome (52153635125).

The spelling of 31120333012 in words is "thirty-one billion, one hundred twenty million, three hundred thirty-three thousand, twelve".