131656475 has 12 divisors (see below), whose sum is σ = 163407696. Its totient is φ = 105226080.

The previous prime is 131656463. The next prime is 131656477. The reversal of 131656475 is 574656131.

It is not a de Polignac number, because 131656475 - 2¹² = 131652379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131656477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36869 + ... + 40281.

It is an arithmetic number, because the mean of its divisors is an integer number (13617308).

Almost surely, 2^131656475 is an apocalyptic number.

131656475 is a deficient number, since it is larger than the sum of its proper divisors (31751221).

131656475 is a wasteful number, since it uses less digits than its factorization.

131656475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4966 (or 4961 counting only the distinct ones).

The product of its digits is 75600, while the sum is 38.

The square root of 131656475 is about 11474.1655470017. The cubic root of 131656475 is about 508.7222596139.

The spelling of 131656475 in words is "one hundred thirty-one million, six hundred fifty-six thousand, four hundred seventy-five".