131137457 has 4 divisors (see below), whose sum is σ = 143059056. Its totient is φ = 119215860.

The previous prime is 131137453. The next prime is 131137463. The reversal of 131137457 is 754731131.

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 not a de Polignac number, because 131137457 - 2² = 131137453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131137451) 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, 5960783 + ... + 5960804.

It is an arithmetic number, because the mean of its divisors is an integer number (35764764).

Almost surely, 2^131137457 is an apocalyptic number.

It is an amenable number.

131137457 is a deficient number, since it is larger than the sum of its proper divisors (11921599).

131137457 is a wasteful number, since it uses less digits than its factorization.

131137457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11921598.

The product of its digits is 8820, while the sum is 32.

The square root of 131137457 is about 11451.5264048074. The cubic root of 131137457 is about 508.0528818923.

Adding to 131137457 its reverse (754731131), we get a palindrome (885868588).

The spelling of 131137457 in words is "one hundred thirty-one million, one hundred thirty-seven thousand, four hundred fifty-seven".