31312321230200 has 48 divisors (see below), whose sum is σ = 72801956202480. Its totient is φ = 12524789250560.

The previous prime is 31312321230193. The next prime is 31312321230227. The reversal of 31312321230200 is 203212321313.

It is a super-2 number, since 2×31312321230200² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18207917 + ... + 19853283.

It is an arithmetic number, because the mean of its divisors is an integer number (1516707420885).

Almost surely, 2^{31312321230200} is an apocalyptic number.

It is an amenable number.

31312321230200 is an abundant number, since it is smaller than the sum of its proper divisors (41489634972280).

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

31312321230200 is a wasteful number, since it uses less digits than its factorization.

31312321230200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740536 (or 1740527 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 31312321230200 its reverse (203212321313), we get a palindrome (31515533551513).

The spelling of 31312321230200 in words is "thirty-one trillion, three hundred twelve billion, three hundred twenty-one million, two hundred thirty thousand, two hundred".