131272637 has 4 divisors (see below), whose sum is σ = 131311740. Its totient is φ = 131233536.

The previous prime is 131272619. The next prime is 131272639. The reversal of 131272637 is 736272131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 95140516 + 36132121 = 9754^2 + 6011^2 .

It is a cyclic number.

It is not a de Polignac number, because 131272637 - 2¹⁶ = 131207101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131272639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13988 + ... + 21405.

It is an arithmetic number, because the mean of its divisors is an integer number (32827935).

Almost surely, 2^131272637 is an apocalyptic number.

It is an amenable number.

131272637 is a deficient number, since it is larger than the sum of its proper divisors (39103).

131272637 is an equidigital number, since it uses as much as digits as its factorization.

131272637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39102.

The product of its digits is 10584, while the sum is 32.

The square root of 131272637 is about 11457.4271544706. The cubic root of 131272637 is about 508.2273934445.

The spelling of 131272637 in words is "one hundred thirty-one million, two hundred seventy-two thousand, six hundred thirty-seven".