131887453 has 4 divisors (see below), whose sum is σ = 132188320. Its totient is φ = 131586588.

The previous prime is 131887433. The next prime is 131887463. The reversal of 131887453 is 354788131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 354788131 = 79 ⋅4490989.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131887453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131887403) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 149775 + ... + 150652.

It is an arithmetic number, because the mean of its divisors is an integer number (33047080).

Almost surely, 2^131887453 is an apocalyptic number.

It is an amenable number.

131887453 is a deficient number, since it is larger than the sum of its proper divisors (300867).

131887453 is an equidigital number, since it uses as much as digits as its factorization.

131887453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300866.

The product of its digits is 80640, while the sum is 40.

The square root of 131887453 is about 11484.2262691049. The cubic root of 131887453 is about 509.0195864282.

The spelling of 131887453 in words is "one hundred thirty-one million, eight hundred eighty-seven thousand, four hundred fifty-three".