131456737 has 4 divisors (see below), whose sum is σ = 132733120. Its totient is φ = 130180356.

The previous prime is 131456723. The next prime is 131456749. The reversal of 131456737 is 737654131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131456737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131456696 and 131456705.

It is not an unprimeable number, because it can be changed into a prime (131456777) 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, 638037 + ... + 638242.

It is an arithmetic number, because the mean of its divisors is an integer number (33183280).

Almost surely, 2^131456737 is an apocalyptic number.

It is an amenable number.

131456737 is a deficient number, since it is larger than the sum of its proper divisors (1276383).

131456737 is a wasteful number, since it uses less digits than its factorization.

131456737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276382.

The product of its digits is 52920, while the sum is 37.

The square root of 131456737 is about 11465.4584295614. The cubic root of 131456737 is about 508.4648660313.

The spelling of 131456737 in words is "one hundred thirty-one million, four hundred fifty-six thousand, seven hundred thirty-seven".