131766213 has 32 divisors (see below), whose sum is σ = 188236800. Its totient is φ = 81838080.

The previous prime is 131766203. The next prime is 131766253. The reversal of 131766213 is 312667131.

It is not a de Polignac number, because 131766213 - 2⁵ = 131766181 is a prime.

It is a super-2 number, since 2×131766213² = 34724669776722738, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131766203) 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, 512581 + ... + 512837.

It is an arithmetic number, because the mean of its divisors is an integer number (5882400).

Almost surely, 2^131766213 is an apocalyptic number.

It is an amenable number.

131766213 is a deficient number, since it is larger than the sum of its proper divisors (56470587).

131766213 is a wasteful number, since it uses less digits than its factorization.

131766213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477.

The product of its digits is 4536, while the sum is 30.

The square root of 131766213 is about 11478.9465108955. The cubic root of 131766213 is about 508.8635633611.

The spelling of 131766213 in words is "one hundred thirty-one million, seven hundred sixty-six thousand, two hundred thirteen".