31230331320120 has 32 divisors (see below), whose sum is σ = 93690993960720. Its totient is φ = 8328088352000.

The previous prime is 31230331320101. The next prime is 31230331320247. The reversal of 31230331320120 is 2102313303213.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 130126380381 + ... + 130126380620.

Almost surely, 2^{31230331320120} is an apocalyptic number.

31230331320120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31230331320120 is an abundant number, since it is smaller than the sum of its proper divisors (62460662640600).

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

31230331320120 is a wasteful number, since it uses less digits than its factorization.

31230331320120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260252761015 (or 260252761011 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 31230331320120 its reverse (2102313303213), we get a palindrome (33332644623333).

The spelling of 31230331320120 in words is "thirty-one trillion, two hundred thirty billion, three hundred thirty-one million, three hundred twenty thousand, one hundred twenty".