31323321020200 has 96 divisors (see below), whose sum is σ = 79448968690560. Its totient is φ = 11390063961600.

The previous prime is 31323321020161. The next prime is 31323321020209. The reversal of 31323321020200 is 202012332313.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (31323321020209) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 135001489 + ... + 135233311.

It is an arithmetic number, because the mean of its divisors is an integer number (827593423860).

Almost surely, 2^{31323321020200} is an apocalyptic number.

It is an amenable number.

31323321020200 is an abundant number, since it is smaller than the sum of its proper divisors (48125647670360).

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

31323321020200 is a wasteful number, since it uses less digits than its factorization.

31323321020200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293267 (or 293258 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31323321020200 its reverse (202012332313), we get a palindrome (31525333352513).

The spelling of 31323321020200 in words is "thirty-one trillion, three hundred twenty-three billion, three hundred twenty-one million, twenty thousand, two hundred".