231248165 has 4 divisors (see below), whose sum is σ = 277497804. Its totient is φ = 184998528.

The previous prime is 231248153. The next prime is 231248177. The reversal of 231248165 is 561842132.

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

It is an interprime number because it is at equal distance from previous prime (231248153) and next prime (231248177).

It can be written as a sum of positive squares in 2 ways, for example, as 147452449 + 83795716 = 12143^2 + 9154^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231248165 is a prime.

It is a super-3 number, since 3×231248165³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23124812 + ... + 23124821.

It is an arithmetic number, because the mean of its divisors is an integer number (69374451).

Almost surely, 2^231248165 is an apocalyptic number.

It is an amenable number.

231248165 is a deficient number, since it is larger than the sum of its proper divisors (46249639).

231248165 is an equidigital number, since it uses as much as digits as its factorization.

231248165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46249638.

The product of its digits is 11520, while the sum is 32.

The square root of 231248165 is about 15206.8459911975. The cubic root of 231248165 is about 613.7988895618.

The spelling of 231248165 in words is "two hundred thirty-one million, two hundred forty-eight thousand, one hundred sixty-five".