131366564 has 24 divisors (see below), whose sum is σ = 262976448. Its totient is φ = 56247840.

The previous prime is 131366563. The next prime is 131366569. The reversal of 131366564 is 465663131.

It is not an unprimeable number, because it can be changed into a prime (131366563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55142 + ... + 57474.

It is an arithmetic number, because the mean of its divisors is an integer number (10957352).

Almost surely, 2^131366564 is an apocalyptic number.

131366564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

131366564 is an abundant number, since it is smaller than the sum of its proper divisors (131609884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131366564 is a wasteful number, since it uses less digits than its factorization.

131366564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4355 (or 4353 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 131366564 is about 11461.5253784128. The cubic root of 131366564 is about 508.3485786225.

The spelling of 131366564 in words is "one hundred thirty-one million, three hundred sixty-six thousand, five hundred sixty-four".