131531200 has 42 divisors (see below), whose sum is σ = 323652896. Its totient is φ = 52611840.

The previous prime is 131531161. The next prime is 131531201. The reversal of 131531200 is 2135131.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131531201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39504 + ... + 42703.

Almost surely, 2^131531200 is an apocalyptic number.

131531200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

131531200 is an abundant number, since it is smaller than the sum of its proper divisors (192121696).

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

131531200 is an equidigital number, since it uses as much as digits as its factorization.

131531200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82229 (or 82214 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 131531200 is about 11468.7052451443. The cubic root of 131531200 is about 508.5608536887.

Adding to 131531200 its reverse (2135131), we get a palindrome (133666331).

The spelling of 131531200 in words is "one hundred thirty-one million, five hundred thirty-one thousand, two hundred".