20131312233100 has 36 divisors (see below), whose sum is σ = 44117471801088. Its totient is φ = 7972796920000.

The previous prime is 20131312233089. The next prime is 20131312233127. The reversal of 20131312233100 is 133221313102.

It is a super-2 number, since 2×20131312233100² (a number of 27 digits) contains 22 as substring.

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, 996589516 + ... + 996609715.

It is an arithmetic number, because the mean of its divisors is an integer number (1225485327808).

Almost surely, 2^{20131312233100} is an apocalyptic number.

20131312233100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20131312233100 is an abundant number, since it is smaller than the sum of its proper divisors (23986159567988).

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

20131312233100 is a wasteful number, since it uses less digits than its factorization.

20131312233100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993199346 (or 1993199339 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20131312233100 its reverse (133221313102), we get a palindrome (20264533546202).

The spelling of 20131312233100 in words is "twenty trillion, one hundred thirty-one billion, three hundred twelve million, two hundred thirty-three thousand, one hundred".