131105564 has 12 divisors (see below), whose sum is σ = 242931024. Its totient is φ = 61696704.

The previous prime is 131105563. The next prime is 131105573. The reversal of 131105564 is 465501131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131105561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 963944 + ... + 964079.

It is an arithmetic number, because the mean of its divisors is an integer number (20244252).

Almost surely, 2^131105564 is an apocalyptic number.

It is an amenable number.

131105564 is a deficient number, since it is larger than the sum of its proper divisors (111825460).

131105564 is a wasteful number, since it uses less digits than its factorization.

131105564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1928044 (or 1928042 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 131105564 is about 11450.1337983449. The cubic root of 131105564 is about 508.0116919210.

Adding to 131105564 its reverse (465501131), we get a palindrome (596606695).

The spelling of 131105564 in words is "one hundred thirty-one million, one hundred five thousand, five hundred sixty-four".