131409057 has 8 divisors (see below), whose sum is σ = 188689984. Its totient is φ = 80867088.

The previous prime is 131409049. The next prime is 131409119. The reversal of 131409057 is 750904131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131409057 - 2³ = 131409049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131409037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1684693 + ... + 1684770.

It is an arithmetic number, because the mean of its divisors is an integer number (23586248).

Almost surely, 2^131409057 is an apocalyptic number.

It is an amenable number.

131409057 is a deficient number, since it is larger than the sum of its proper divisors (57280927).

131409057 is a wasteful number, since it uses less digits than its factorization.

131409057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3369479.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 131409057 is about 11463.3789521240. The cubic root of 131409057 is about 508.4033843681.

The spelling of 131409057 in words is "one hundred thirty-one million, four hundred nine thousand, fifty-seven".