31112120200 has 96 divisors (see below), whose sum is σ = 84685829760. Its totient is φ = 10406822400.

The previous prime is 31112120191. The next prime is 31112120203. The reversal of 31112120200 is 202121113.

It is not an unprimeable number, because it can be changed into a prime (31112120203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 213612 + ... + 328411.

It is an arithmetic number, because the mean of its divisors is an integer number (882144060).

Almost surely, 2^31112120200 is an apocalyptic number.

It is an amenable number.

31112120200 is an abundant number, since it is smaller than the sum of its proper divisors (53573709560).

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

31112120200 is a wasteful number, since it uses less digits than its factorization.

31112120200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542087 (or 542078 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 31112120200 its reverse (202121113), we get a palindrome (31314241313).

The spelling of 31112120200 in words is "thirty-one billion, one hundred twelve million, one hundred twenty thousand, two hundred".