131166211 has 12 divisors (see below), whose sum is σ = 146518200. Its totient is φ = 116450880.

The previous prime is 131166199. The next prime is 131166223. The reversal of 131166211 is 112661131.

It is an interprime number because it is at equal distance from previous prime (131166199) and next prime (131166223).

It is a de Polignac number, because none of the positive numbers 2^k-131166211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131166241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17115 + ... + 23563.

It is an arithmetic number, because the mean of its divisors is an integer number (12209850).

Almost surely, 2^131166211 is an apocalyptic number.

131166211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131166211 is a deficient number, since it is larger than the sum of its proper divisors (15351989).

131166211 is an equidigital number, since it uses as much as digits as its factorization.

131166211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6546 (or 6503 counting only the distinct ones).

The product of its digits is 216, while the sum is 22.

The square root of 131166211 is about 11452.7818018157. The cubic root of 131166211 is about 508.0900121049.

The spelling of 131166211 in words is "one hundred thirty-one million, one hundred sixty-six thousand, two hundred eleven".