31123130122200 has 96 divisors (see below), whose sum is σ = 96484032216000. Its totient is φ = 8299301036160.

The previous prime is 31123130122169. The next prime is 31123130122267. The reversal of 31123130122200 is 222103132113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25134819 + ... + 26343981.

It is an arithmetic number, because the mean of its divisors is an integer number (1005042002250).

Almost surely, 2^{31123130122200} is an apocalyptic number.

31123130122200 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31123130122200 is an abundant number, since it is smaller than the sum of its proper divisors (65360902093800).

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

31123130122200 is a wasteful number, since it uses less digits than its factorization.

31123130122200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252081 (or 1252072 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 31123130122200 its reverse (222103132113), we get a palindrome (31345233254313).

The spelling of 31123130122200 in words is "thirty-one trillion, one hundred twenty-three billion, one hundred thirty million, one hundred twenty-two thousand, two hundred".