131453644 has 12 divisors (see below), whose sum is σ = 262907344. Its totient is φ = 56337264.

The previous prime is 131453617. The next prime is 131453659. The reversal of 131453644 is 446354131.

It is a happy number.

131453644 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2347359 + ... + 2347414.

Almost surely, 2^131453644 is an apocalyptic number.

131453644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

131453644 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

131453644 is a wasteful number, since it uses less digits than its factorization.

131453644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4694784 (or 4694782 counting only the distinct ones).

The product of its digits is 17280, while the sum is 31.

The square root of 131453644 is about 11465.3235453693. The cubic root of 131453644 is about 508.4608781688.

The spelling of 131453644 in words is "one hundred thirty-one million, four hundred fifty-three thousand, six hundred forty-four".