31211032012 has 12 divisors (see below), whose sum is σ = 54954394936. Its totient is φ = 15509776320.

The previous prime is 31211032001. The next prime is 31211032067. The reversal of 31211032012 is 21023011213.

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, 23934189 + ... + 23935492.

Almost surely, 2^31211032012 is an apocalyptic number.

It is an amenable number.

31211032012 is a deficient number, since it is larger than the sum of its proper divisors (23743362924).

31211032012 is a wasteful number, since it uses less digits than its factorization.

31211032012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47869848 (or 47869846 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31211032012 its reverse (21023011213), we get a palindrome (52234043225).

The spelling of 31211032012 in words is "thirty-one billion, two hundred eleven million, thirty-two thousand, twelve".