131166563 has 4 divisors (see below), whose sum is σ = 143090808. Its totient is φ = 119242320.

The previous prime is 131166551. The next prime is 131166571. The reversal of 131166563 is 365661131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131166563 - 2⁴ = 131166547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131166533) 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, 5962106 + ... + 5962127.

It is an arithmetic number, because the mean of its divisors is an integer number (35772702).

Almost surely, 2^131166563 is an apocalyptic number.

131166563 is a deficient number, since it is larger than the sum of its proper divisors (11924245).

131166563 is a wasteful number, since it uses less digits than its factorization.

131166563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11924244.

The product of its digits is 9720, while the sum is 32.

The square root of 131166563 is about 11452.7971692508. The cubic root of 131166563 is about 508.0904666110.

The spelling of 131166563 in words is "one hundred thirty-one million, one hundred sixty-six thousand, five hundred sixty-three".