31120151012 has 12 divisors (see below), whose sum is σ = 56828102016. Its totient is φ = 14883550440.

The previous prime is 31120150981. The next prime is 31120151017. The reversal of 31120151012 is 21015102113.

It is not an unprimeable number, because it can be changed into a prime (31120151017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169131164 + ... + 169131347.

It is an arithmetic number, because the mean of its divisors is an integer number (4735675168).

Almost surely, 2^31120151012 is an apocalyptic number.

It is an amenable number.

31120151012 is a deficient number, since it is larger than the sum of its proper divisors (25707951004).

31120151012 is a wasteful number, since it uses less digits than its factorization.

31120151012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338262538 (or 338262536 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 17.

Adding to 31120151012 its reverse (21015102113), we get a palindrome (52135253125).

The spelling of 31120151012 in words is "thirty-one billion, one hundred twenty million, one hundred fifty-one thousand, twelve".