131137887 has 8 divisors (see below), whose sum is σ = 174904704. Its totient is φ = 87398168.

The previous prime is 131137883. The next prime is 131137891. The reversal of 131137887 is 788731131.

It is an interprime number because it is at equal distance from previous prime (131137883) and next prime (131137891).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131137887 - 2² = 131137883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131137883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11788 + ... + 20030.

It is an arithmetic number, because the mean of its divisors is an integer number (21863088).

Almost surely, 2^131137887 is an apocalyptic number.

131137887 is a deficient number, since it is larger than the sum of its proper divisors (43766817).

131137887 is an equidigital number, since it uses as much as digits as its factorization.

131137887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13549.

The product of its digits is 28224, while the sum is 39.

The square root of 131137887 is about 11451.5451795817. The cubic root of 131137887 is about 508.0534371939.

The spelling of 131137887 in words is "one hundred thirty-one million, one hundred thirty-seven thousand, eight hundred eighty-seven".