131165564 has 24 divisors (see below), whose sum is σ = 233080848. Its totient is φ = 64576640.

The previous prime is 131165549. The next prime is 131165623. The reversal of 131165564 is 465561131.

It is a self number, because there is not a number n which added to its sum of digits gives 131165564.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 152624 + ... + 153480.

It is an arithmetic number, because the mean of its divisors is an integer number (9711702).

Almost surely, 2^131165564 is an apocalyptic number.

It is an amenable number.

131165564 is a deficient number, since it is larger than the sum of its proper divisors (101915284).

131165564 is a wasteful number, since it uses less digits than its factorization.

131165564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1405 (or 1403 counting only the distinct ones).

The product of its digits is 10800, while the sum is 32.

The square root of 131165564 is about 11452.7535553682. The cubic root of 131165564 is about 508.0891766896.

The spelling of 131165564 in words is "one hundred thirty-one million, one hundred sixty-five thousand, five hundred sixty-four".