131626791 has 6 divisors (see below), whose sum is σ = 190127600. Its totient is φ = 87751188.

The previous prime is 131626777. The next prime is 131626823. The reversal of 131626791 is 197626131.

It is not a de Polignac number, because 131626791 - 2²¹ = 129529639 is a prime.

It is a super-2 number, since 2×131626791² = 34651224217915362, 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 (131626751) 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 5 ways as a sum of consecutive naturals, for example, 7312591 + ... + 7312608.

Almost surely, 2^131626791 is an apocalyptic number.

131626791 is a deficient number, since it is larger than the sum of its proper divisors (58500809).

131626791 is a wasteful number, since it uses less digits than its factorization.

131626791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14625205 (or 14625202 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 131626791 is about 11472.8719595400. The cubic root of 131626791 is about 508.6840236248.

The spelling of 131626791 in words is "one hundred thirty-one million, six hundred twenty-six thousand, seven hundred ninety-one".