231328127 has 4 divisors (see below), whose sum is σ = 231567336. Its totient is φ = 231088920.

The previous prime is 231328121. The next prime is 231328151. The reversal of 231328127 is 721823132.

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 231328127 - 2⁸ = 231327871 is a prime.

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 231328127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231328121) 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, 118148 + ... + 120089.

It is an arithmetic number, because the mean of its divisors is an integer number (57891834).

Almost surely, 2^231328127 is an apocalyptic number.

231328127 is a deficient number, since it is larger than the sum of its proper divisors (239209).

231328127 is an equidigital number, since it uses as much as digits as its factorization.

231328127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239208.

The product of its digits is 4032, while the sum is 29.

The square root of 231328127 is about 15209.4749087534. The cubic root of 231328127 is about 613.8696287621.

The spelling of 231328127 in words is "two hundred thirty-one million, three hundred twenty-eight thousand, one hundred twenty-seven".