166034431 has 2 divisors, whose sum is σ = 166034432. Its totient is φ = 166034430.

The previous prime is 166034417. The next prime is 166034467. The reversal of 166034431 is 134430661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166034431 - 2⁷ = 166034303 is a prime.

It is a super-2 number, since 2×166034431² = 55134864554987522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166034431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166034471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83017215 + 83017216.

It is an arithmetic number, because the mean of its divisors is an integer number (83017216).

Almost surely, 2^166034431 is an apocalyptic number.

166034431 is a deficient number, since it is larger than the sum of its proper divisors (1).

166034431 is an equidigital number, since it uses as much as digits as its factorization.

166034431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 166034431 is about 12885.4348393836. The cubic root of 166034431 is about 549.6244609964.

The spelling of 166034431 in words is "one hundred sixty-six million, thirty-four thousand, four hundred thirty-one".