131404564 has 12 divisors (see below), whose sum is σ = 233856000. Its totient is φ = 64588568.

The previous prime is 131404547. The next prime is 131404601. The reversal of 131404564 is 465404131.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 278164 + ... + 278635.

It is an arithmetic number, because the mean of its divisors is an integer number (19488000).

Almost surely, 2^131404564 is an apocalyptic number.

It is an amenable number.

131404564 is a deficient number, since it is larger than the sum of its proper divisors (102451436).

131404564 is a wasteful number, since it uses less digits than its factorization.

131404564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556862 (or 556860 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 131404564 is about 11463.1829785623. The cubic root of 131404564 is about 508.3975900378.

Adding to 131404564 its reverse (465404131), we get a palindrome (596808695).

The spelling of 131404564 in words is "one hundred thirty-one million, four hundred four thousand, five hundred sixty-four".