31312032213300 has 144 divisors (see below), whose sum is σ = 93454587065280. Its totient is φ = 8088412861440.

The previous prime is 31312032213289. The next prime is 31312032213361. The reversal of 31312032213300 is 331223021313.

It is a super-2 number, since 2×31312032213300² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3693745 + ... + 8733144.

Almost surely, 2^{31312032213300} is an apocalyptic number.

31312032213300 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31312032213300 is an abundant number, since it is smaller than the sum of its proper divisors (62142554851980).

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

31312032213300 is a wasteful number, since it uses less digits than its factorization.

31312032213300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12427170 (or 12427163 counting only the distinct ones).

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

Adding to 31312032213300 its reverse (331223021313), we get a palindrome (31643255234613).

The spelling of 31312032213300 in words is "thirty-one trillion, three hundred twelve billion, thirty-two million, two hundred thirteen thousand, three hundred".