165032513231 has 16 divisors (see below), whose sum is σ = 174396220800. Its totient is φ = 155736999648.

The previous prime is 165032513197. The next prime is 165032513263. The reversal of 165032513231 is 132315230561.

It is not a de Polignac number, because 165032513231 - 2³⁴ = 147852644047 is a prime.

It is a super-2 number, since 2×165032513231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165032512231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24929840 + ... + 24936458.

It is an arithmetic number, because the mean of its divisors is an integer number (10899763800).

Almost surely, 2^165032513231 is an apocalyptic number.

165032513231 is a deficient number, since it is larger than the sum of its proper divisors (9363707569).

165032513231 is a wasteful number, since it uses less digits than its factorization.

165032513231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11558.

The product of its (nonzero) digits is 16200, while the sum is 32.

Adding to 165032513231 its reverse (132315230561), we get a palindrome (297347743792).

The spelling of 165032513231 in words is "one hundred sixty-five billion, thirty-two million, five hundred thirteen thousand, two hundred thirty-one".