131011320100 has 72 divisors (see below), whose sum is σ = 289781452800. Its totient is φ = 51393962880.

The previous prime is 131011320053. The next prime is 131011320113. The reversal of 131011320100 is 1023110131.

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, 18986451 + ... + 18993349.

It is an arithmetic number, because the mean of its divisors is an integer number (4024742400).

Almost surely, 2^131011320100 is an apocalyptic number.

131011320100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131011320100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144890726400).

131011320100 is an abundant number, since it is smaller than the sum of its proper divisors (158770132700).

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

131011320100 is a wasteful number, since it uses less digits than its factorization.

131011320100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10549 (or 10542 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 131011320100 its reverse (1023110131), we get a palindrome (132034430231).

The spelling of 131011320100 in words is "one hundred thirty-one billion, eleven million, three hundred twenty thousand, one hundred".