31230320120 has 64 divisors (see below), whose sum is σ = 70598671200. Its totient is φ = 12433512960.

The previous prime is 31230320057. The next prime is 31230320131. The reversal of 31230320120 is 2102303213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10510235 + ... + 10513205.

Almost surely, 2^31230320120 is an apocalyptic number.

It is an amenable number.

31230320120 is an abundant number, since it is smaller than the sum of its proper divisors (39368351080).

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

31230320120 is a wasteful number, since it uses less digits than its factorization.

31230320120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4128 (or 4124 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31230320120 its reverse (2102303213), we get a palindrome (33332623333).

The spelling of 31230320120 in words is "thirty-one billion, two hundred thirty million, three hundred twenty thousand, one hundred twenty".