131507139 has 8 divisors (see below), whose sum is σ = 180082000. Its totient is φ = 85301856.

The previous prime is 131507137. The next prime is 131507147. The reversal of 131507139 is 931705131.

It is a happy number.

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

It is not a de Polignac number, because 131507139 - 2¹ = 131507137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131507137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 592264 + ... + 592485.

It is an arithmetic number, because the mean of its divisors is an integer number (22510250).

Almost surely, 2^131507139 is an apocalyptic number.

131507139 is a deficient number, since it is larger than the sum of its proper divisors (48574861).

131507139 is a wasteful number, since it uses less digits than its factorization.

131507139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184789.

The product of its (nonzero) digits is 2835, while the sum is 30.

The square root of 131507139 is about 11467.6562121473. The cubic root of 131507139 is about 508.5298414550.

The spelling of 131507139 in words is "one hundred thirty-one million, five hundred seven thousand, one hundred thirty-nine".