165332731 has 2 divisors, whose sum is σ = 165332732. Its totient is φ = 165332730.

The previous prime is 165332723. The next prime is 165332747. The reversal of 165332731 is 137233561.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 165332731 - 2³ = 165332723 is a prime.

It is a super-2 number, since 2×165332731² = 54669823879836722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 165332693 and 165332702.

It is not a weakly prime, because it can be changed into another prime (165332231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82666365 + 82666366.

It is an arithmetic number, because the mean of its divisors is an integer number (82666366).

Almost surely, 2^165332731 is an apocalyptic number.

165332731 is a deficient number, since it is larger than the sum of its proper divisors (1).

165332731 is an equidigital number, since it uses as much as digits as its factorization.

165332731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 31.

The square root of 165332731 is about 12858.1775924895. The cubic root of 165332731 is about 548.8490875320.

The spelling of 165332731 in words is "one hundred sixty-five million, three hundred thirty-two thousand, seven hundred thirty-one".