31320332012 has 24 divisors (see below), whose sum is σ = 55621700400. Its totient is φ = 15428883456.

The previous prime is 31320332003. The next prime is 31320332023. The reversal of 31320332012 is 21023302313.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213539 + ... + 328997.

It is an arithmetic number, because the mean of its divisors is an integer number (2317570850).

Almost surely, 2^31320332012 is an apocalyptic number.

It is an amenable number.

31320332012 is a deficient number, since it is larger than the sum of its proper divisors (24301368388).

31320332012 is a wasteful number, since it uses less digits than its factorization.

31320332012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116465 (or 116463 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 31320332012 its reverse (21023302313), we get a palindrome (52343634325).

The spelling of 31320332012 in words is "thirty-one billion, three hundred twenty million, three hundred thirty-two thousand, twelve".