131647551 has 16 divisors (see below), whose sum is σ = 200772864. Its totient is φ = 75164544.

The previous prime is 131647513. The next prime is 131647589. The reversal of 131647551 is 155746131.

It is an interprime number because it is at equal distance from previous prime (131647513) and next prime (131647589).

It is not a de Polignac number, because 131647551 - 2¹⁰ = 131646527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131647511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37660 + ... + 41006.

It is an arithmetic number, because the mean of its divisors is an integer number (12548304).

Almost surely, 2^131647551 is an apocalyptic number.

131647551 is a deficient number, since it is larger than the sum of its proper divisors (69125313).

131647551 is a wasteful number, since it uses less digits than its factorization.

131647551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5230.

The product of its digits is 12600, while the sum is 33.

The square root of 131647551 is about 11473.7766668173. The cubic root of 131647551 is about 508.7107652051.

The spelling of 131647551 in words is "one hundred thirty-one million, six hundred forty-seven thousand, five hundred fifty-one".