131374631 has 4 divisors (see below), whose sum is σ = 131615352. Its totient is φ = 131133912.

The previous prime is 131374583. The next prime is 131374673. The reversal of 131374631 is 136473131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136473131 = 37 ⋅3688463.

It is a cyclic number.

It is not a de Polignac number, because 131374631 - 2²⁶ = 64265767 is a prime.

It is a super-2 number, since 2×131374631² = 34518587340772322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131374594 and 131374603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131376631) 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, 119540 + ... + 120633.

It is an arithmetic number, because the mean of its divisors is an integer number (32903838).

Almost surely, 2^131374631 is an apocalyptic number.

131374631 is a deficient number, since it is larger than the sum of its proper divisors (240721).

131374631 is an equidigital number, since it uses as much as digits as its factorization.

131374631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240720.

The product of its digits is 4536, while the sum is 29.

The square root of 131374631 is about 11461.8772895194. The cubic root of 131374631 is about 508.3589840202.

The spelling of 131374631 in words is "one hundred thirty-one million, three hundred seventy-four thousand, six hundred thirty-one".