131178057 has 4 divisors (see below), whose sum is σ = 174904080. Its totient is φ = 87452036.

The previous prime is 131178043. The next prime is 131178083. The reversal of 131178057 is 750871131.

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 131178057 - 2¹⁴ = 131161673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131178017) 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, 21863007 + ... + 21863012.

It is an arithmetic number, because the mean of its divisors is an integer number (43726020).

Almost surely, 2^131178057 is an apocalyptic number.

It is an amenable number.

131178057 is a deficient number, since it is larger than the sum of its proper divisors (43726023).

131178057 is an equidigital number, since it uses as much as digits as its factorization.

131178057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43726022.

The product of its (nonzero) digits is 5880, while the sum is 33.

The square root of 131178057 is about 11453.2989570691. The cubic root of 131178057 is about 508.1053073375.

The spelling of 131178057 in words is "one hundred thirty-one million, one hundred seventy-eight thousand, fifty-seven".