31310140012 has 24 divisors (see below), whose sum is σ = 55015813440. Its totient is φ = 15591381120.

The previous prime is 31310140009. The next prime is 31310140021. The reversal of 31310140012 is 21004101313.

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, 4763064 + ... + 4769632.

It is an arithmetic number, because the mean of its divisors is an integer number (2292325560).

Almost surely, 2^31310140012 is an apocalyptic number.

It is an amenable number.

31310140012 is a deficient number, since it is larger than the sum of its proper divisors (23705673428).

31310140012 is a wasteful number, since it uses less digits than its factorization.

31310140012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11241 (or 11239 counting only the distinct ones).

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

Adding to 31310140012 its reverse (21004101313), we get a palindrome (52314241325).

The spelling of 31310140012 in words is "thirty-one billion, three hundred ten million, one hundred forty thousand, twelve".