131591575 has 12 divisors (see below), whose sum is σ = 163502928. Its totient is φ = 105060800.

The previous prime is 131591569. The next prime is 131591597. The reversal of 131591575 is 575195131.

It is not a de Polignac number, because 131591575 - 2¹⁵ = 131558807 is a prime.

It is a super-2 number, since 2×131591575² = 34632685221961250, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7974 + ... + 18076.

It is an arithmetic number, because the mean of its divisors is an integer number (13625244).

Almost surely, 2^131591575 is an apocalyptic number.

131591575 is a deficient number, since it is larger than the sum of its proper divisors (31911353).

131591575 is a wasteful number, since it uses less digits than its factorization.

131591575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10634 (or 10629 counting only the distinct ones).

The product of its digits is 23625, while the sum is 37.

The square root of 131591575 is about 11471.3371060221. The cubic root of 131591575 is about 508.6386544051.

The spelling of 131591575 in words is "one hundred thirty-one million, five hundred ninety-one thousand, five hundred seventy-five".