231304135 has 8 divisors (see below), whose sum is σ = 277736400. Its totient is φ = 184929024.

The previous prime is 231304111. The next prime is 231304189. The reversal of 231304135 is 531403132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231304135 - 2²⁵ = 197749703 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 4810 + ... + 22039.

It is an arithmetic number, because the mean of its divisors is an integer number (34717050).

Almost surely, 2^231304135 is an apocalyptic number.

231304135 is a deficient number, since it is larger than the sum of its proper divisors (46432265).

231304135 is a wasteful number, since it uses less digits than its factorization.

231304135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28577.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 231304135 is about 15208.6861694231. The cubic root of 231304135 is about 613.8484057062.

Adding to 231304135 its reverse (531403132), we get a palindrome (762707267).

The spelling of 231304135 in words is "two hundred thirty-one million, three hundred four thousand, one hundred thirty-five".