165830131 has 2 divisors, whose sum is σ = 165830132. Its totient is φ = 165830130.

The previous prime is 165830107. The next prime is 165830141. The reversal of 165830131 is 131038561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165830131 - 2¹⁹ = 165305843 is a prime.

It is a super-2 number, since 2×165830131² = 54999264694954322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 165830131.

It is not a weakly prime, because it can be changed into another prime (165830141) 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 as a sum of consecutive naturals, namely, 82915065 + 82915066.

It is an arithmetic number, because the mean of its divisors is an integer number (82915066).

Almost surely, 2^165830131 is an apocalyptic number.

165830131 is a deficient number, since it is larger than the sum of its proper divisors (1).

165830131 is an equidigital number, since it uses as much as digits as its factorization.

165830131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 165830131 is about 12877.5048437188. The cubic root of 165830131 is about 549.3989367604.

Adding to 165830131 its reverse (131038561), we get a palindrome (296868692).

The spelling of 165830131 in words is "one hundred sixty-five million, eight hundred thirty thousand, one hundred thirty-one".