131258817 has 12 divisors (see below), whose sum is σ = 189745920. Its totient is φ = 87436728.

The previous prime is 131258807. The next prime is 131258839. The reversal of 131258817 is 718852131.

It is not a de Polignac number, because 131258817 - 2⁷ = 131258689 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (131258807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7984 + ... + 18062.

It is an arithmetic number, because the mean of its divisors is an integer number (15812160).

Almost surely, 2^131258817 is an apocalyptic number.

It is an amenable number.

131258817 is a deficient number, since it is larger than the sum of its proper divisors (58487103).

131258817 is a wasteful number, since it uses less digits than its factorization.

131258817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11532 (or 11529 counting only the distinct ones).

The product of its digits is 13440, while the sum is 36.

The square root of 131258817 is about 11456.8240363549. The cubic root of 131258817 is about 508.2095579198.

The spelling of 131258817 in words is "one hundred thirty-one million, two hundred fifty-eight thousand, eight hundred seventeen".