231885163 has 4 divisors (see below), whose sum is σ = 235815480. Its totient is φ = 227954848.

The previous prime is 231885161. The next prime is 231885167. The reversal of 231885163 is 361588132.

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 231885163 - 2¹ = 231885161 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (231885161) 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, 1965070 + ... + 1965187.

It is an arithmetic number, because the mean of its divisors is an integer number (58953870).

Almost surely, 2^231885163 is an apocalyptic number.

231885163 is a deficient number, since it is larger than the sum of its proper divisors (3930317).

231885163 is an equidigital number, since it uses as much as digits as its factorization.

231885163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3930316.

The product of its digits is 34560, while the sum is 37.

The square root of 231885163 is about 15227.7760359154. The cubic root of 231885163 is about 614.3619645980.

The spelling of 231885163 in words is "two hundred thirty-one million, eight hundred eighty-five thousand, one hundred sixty-three".