31312020200 has 48 divisors (see below), whose sum is σ = 73145571360. Its totient is φ = 12465432000.

The previous prime is 31312020167. The next prime is 31312020203. The reversal of 31312020200 is 202021313.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (31312020203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 328796 + ... + 413195.

It is an arithmetic number, because the mean of its divisors is an integer number (1523866070).

Almost surely, 2^31312020200 is an apocalyptic number.

It is an amenable number.

31312020200 is an abundant number, since it is smaller than the sum of its proper divisors (41833551160).

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

31312020200 is a wasteful number, since it uses less digits than its factorization.

31312020200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742218 (or 742209 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 31312020200 its reverse (202021313), we get a palindrome (31514041513).

The spelling of 31312020200 in words is "thirty-one billion, three hundred twelve million, twenty thousand, two hundred".