131271651 has 16 divisors (see below), whose sum is σ = 222259200. Its totient is φ = 75012264.

The previous prime is 131271629. The next prime is 131271653. The reversal of 131271651 is 156172131.

131271651 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 7 + 1 + 651 = 666.

It is not a de Polignac number, because 131271651 - 2¹⁵ = 131238883 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (131271653) 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, 347091 + ... + 347468.

It is an arithmetic number, because the mean of its divisors is an integer number (13891200).

Almost surely, 2^131271651 is an apocalyptic number.

131271651 is a deficient number, since it is larger than the sum of its proper divisors (90987549).

131271651 is an equidigital number, since it uses as much as digits as its factorization.

131271651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694575 (or 694569 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 131271651 is about 11457.3841255323. The cubic root of 131271651 is about 508.2261209948.

The spelling of 131271651 in words is "one hundred thirty-one million, two hundred seventy-one thousand, six hundred fifty-one".