131506887 has 8 divisors (see below), whose sum is σ = 175550080. Its totient is φ = 87567480.

The previous prime is 131506873. The next prime is 131506889. The reversal of 131506887 is 788605131.

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

It is not a de Polignac number, because 131506887 - 2²² = 127312583 is a prime.

It is a super-2 number, since 2×131506887² = 34588122656861538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131506889) 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, 22939 + ... + 28092.

It is an arithmetic number, because the mean of its divisors is an integer number (21943760).

Almost surely, 2^131506887 is an apocalyptic number.

131506887 is a deficient number, since it is larger than the sum of its proper divisors (44043193).

131506887 is an equidigital number, since it uses as much as digits as its factorization.

131506887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51893.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 131506887 is about 11467.6452247181. The cubic root of 131506887 is about 508.5295166321.

The spelling of 131506887 in words is "one hundred thirty-one million, five hundred six thousand, eight hundred eighty-seven".