165152431 has 4 divisors (see below), whose sum is σ = 165211312. Its totient is φ = 165093552.

The previous prime is 165152371. The next prime is 165152447. The reversal of 165152431 is 134251561.

165152431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 165152431 - 2¹¹ = 165150383 is a prime.

It is a super-2 number, since 2×165152431² = 54550650930419522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 165152431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165152131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25011 + ... + 30916.

It is an arithmetic number, because the mean of its divisors is an integer number (41302828).

Almost surely, 2^165152431 is an apocalyptic number.

165152431 is a deficient number, since it is larger than the sum of its proper divisors (58881).

165152431 is an equidigital number, since it uses as much as digits as its factorization.

165152431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58880.

The product of its digits is 3600, while the sum is 28.

The square root of 165152431 is about 12851.1645775782. The cubic root of 165152431 is about 548.6495031673.

The spelling of 165152431 in words is "one hundred sixty-five million, one hundred fifty-two thousand, four hundred thirty-one".