131166651 has 32 divisors (see below), whose sum is σ = 219068928. Its totient is φ = 67818240.

The previous prime is 131166647. The next prime is 131166683. The reversal of 131166651 is 156661131.

It is not a de Polignac number, because 131166651 - 2² = 131166647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131166551) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 52605 + ... + 55041.

It is an arithmetic number, because the mean of its divisors is an integer number (6845904).

Almost surely, 2^131166651 is an apocalyptic number.

131166651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131166651 is a deficient number, since it is larger than the sum of its proper divisors (87902277).

131166651 is a wasteful number, since it uses less digits than its factorization.

131166651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691.

The product of its digits is 3240, while the sum is 30.

The square root of 131166651 is about 11452.8010111064. The cubic root of 131166651 is about 508.0905802374.

The spelling of 131166651 in words is "one hundred thirty-one million, one hundred sixty-six thousand, six hundred fifty-one".