131531195 has 16 divisors (see below), whose sum is σ = 162404352. Its totient is φ = 102207840.

The previous prime is 131531161. The next prime is 131531201. The reversal of 131531195 is 591135131.

It is not a de Polignac number, because 131531195 - 2¹⁰ = 131530171 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39464 + ... + 42666.

It is an arithmetic number, because the mean of its divisors is an integer number (10150272).

Almost surely, 2^131531195 is an apocalyptic number.

131531195 is a deficient number, since it is larger than the sum of its proper divisors (30873157).

131531195 is a wasteful number, since it uses less digits than its factorization.

131531195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3442.

The product of its digits is 2025, while the sum is 29.

The square root of 131531195 is about 11468.7050271598. The cubic root of 131531195 is about 508.5608472445.

The spelling of 131531195 in words is "one hundred thirty-one million, five hundred thirty-one thousand, one hundred ninety-five".