31310120012 has 12 divisors (see below), whose sum is σ = 55141709280. Its totient is φ = 15555345936.

The previous prime is 31310120003. The next prime is 31310120053. The reversal of 31310120012 is 21002101313.

It is a super-3 number, since 3×31310120012³ (a number of 32 digits) contains 333 as substring.

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, 24927812 + ... + 24929067.

It is an arithmetic number, because the mean of its divisors is an integer number (4595142440).

Almost surely, 2^31310120012 is an apocalyptic number.

It is an amenable number.

31310120012 is a deficient number, since it is larger than the sum of its proper divisors (23831589268).

31310120012 is a wasteful number, since it uses less digits than its factorization.

31310120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49857040 (or 49857038 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 31310120012 its reverse (21002101313), we get a palindrome (52312221325).

The spelling of 31310120012 in words is "thirty-one billion, three hundred ten million, one hundred twenty thousand, twelve".