31132310120 has 32 divisors (see below), whose sum is σ = 74168152200. Its totient is φ = 11720398848.

The previous prime is 31132310113. The next prime is 31132310191. The reversal of 31132310120 is 2101323113.

It can be written as a sum of positive squares in 4 ways, for example, as 19705982884 + 11426327236 = 140378^2 + 106894^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22890725 + ... + 22892084.

Almost surely, 2^31132310120 is an apocalyptic number.

It is an amenable number.

31132310120 is an abundant number, since it is smaller than the sum of its proper divisors (43035842080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31132310120 is a wasteful number, since it uses less digits than its factorization.

31132310120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45782837 (or 45782833 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31132310120 its reverse (2101323113), we get a palindrome (33233633233).

The spelling of 31132310120 in words is "thirty-one billion, one hundred thirty-two million, three hundred ten thousand, one hundred twenty".