166167331 has 16 divisors (see below), whose sum is σ = 191664000. Its totient is φ = 142473600.

The previous prime is 166167329. The next prime is 166167359. The reversal of 166167331 is 133761661.

166167331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 166167331 - 2¹ = 166167329 is a prime.

It is a super-2 number, since 2×166167331² = 55223163783327122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166167431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48720 + ... + 52018.

It is an arithmetic number, because the mean of its divisors is an integer number (11979000).

Almost surely, 2^166167331 is an apocalyptic number.

166167331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

166167331 is a deficient number, since it is larger than the sum of its proper divisors (25496669).

166167331 is a wasteful number, since it uses less digits than its factorization.

166167331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3570.

The product of its digits is 13608, while the sum is 34.

The square root of 166167331 is about 12890.5907932879. The cubic root of 166167331 is about 549.7710683592.

The spelling of 166167331 in words is "one hundred sixty-six million, one hundred sixty-seven thousand, three hundred thirty-one".