131453640 has 96 divisors (see below), whose sum is σ = 441043200. Its totient is φ = 33920640.

The previous prime is 131453617. The next prime is 131453659. The reversal of 131453640 is 46354131.

131453640 is a `hidden beast` number, since 1 + 3 + 14 + 5 + 3 + 640 = 666.

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, 5271 + ... + 17049.

It is an arithmetic number, because the mean of its divisors is an integer number (4594200).

Almost surely, 2^131453640 is an apocalyptic number.

131453640 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 131453640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220521600).

131453640 is an abundant number, since it is smaller than the sum of its proper divisors (309589560).

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

131453640 is a wasteful number, since it uses less digits than its factorization.

131453640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11827 (or 11820 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 131453640 is about 11465.3233709303. The cubic root of 131453640 is about 508.4608730115.

The spelling of 131453640 in words is "one hundred thirty-one million, four hundred fifty-three thousand, six hundred forty".