165879331 has 2 divisors, whose sum is σ = 165879332. Its totient is φ = 165879330.

The previous prime is 165879283. The next prime is 165879341. The reversal of 165879331 is 133978561.

165879331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (133978561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165879331 - 2⁹ = 165878819 is a prime.

It is a super-2 number, since 2×165879331² = 55031904906015122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (165879341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82939665 + 82939666.

It is an arithmetic number, because the mean of its divisors is an integer number (82939666).

Almost surely, 2^165879331 is an apocalyptic number.

165879331 is a deficient number, since it is larger than the sum of its proper divisors (1).

165879331 is an equidigital number, since it uses as much as digits as its factorization.

165879331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 136080, while the sum is 43.

The square root of 165879331 is about 12879.4150100072. The cubic root of 165879331 is about 549.4532649551.

The spelling of 165879331 in words is "one hundred sixty-five million, eight hundred seventy-nine thousand, three hundred thirty-one".