131563564 has 48 divisors (see below), whose sum is σ = 259854336. Its totient is φ = 57758400.

The previous prime is 131563511. The next prime is 131563567. The reversal of 131563564 is 465365131.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (131563567) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 343317 + ... + 343699.

It is an arithmetic number, because the mean of its divisors is an integer number (5413632).

Almost surely, 2^131563564 is an apocalyptic number.

It is an amenable number.

131563564 is a deficient number, since it is larger than the sum of its proper divisors (128290772).

131563564 is a wasteful number, since it uses less digits than its factorization.

131563564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646 (or 644 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The square root of 131563564 is about 11470.1161284444. The cubic root of 131563564 is about 508.6025616984.

The spelling of 131563564 in words is "one hundred thirty-one million, five hundred sixty-three thousand, five hundred sixty-four".