131031011100 has 72 divisors (see below), whose sum is σ = 413581529088. Its totient is φ = 31765092800.

The previous prime is 131031011093. The next prime is 131031011149. The reversal of 131031011100 is 1110130131.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 19849884 + ... + 19856483.

It is an arithmetic number, because the mean of its divisors is an integer number (5744187904).

Almost surely, 2^131031011100 is an apocalyptic number.

131031011100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131031011100 is an abundant number, since it is smaller than the sum of its proper divisors (282550517988).

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

131031011100 is a wasteful number, since it uses less digits than its factorization.

131031011100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39706395 (or 39706388 counting only the distinct ones).

The product of its (nonzero) digits is 9, while the sum is 12.

Adding to 131031011100 its reverse (1110130131), we get a palindrome (132141141231).

The spelling of 131031011100 in words is "one hundred thirty-one billion, thirty-one million, eleven thousand, one hundred".