231663153 has 16 divisors (see below), whose sum is σ = 327131136. Its totient is φ = 145519440.

The previous prime is 231663149. The next prime is 231663191. The reversal of 231663153 is 351366132.

It is a happy number.

It is not a de Polignac number, because 231663153 - 2² = 231663149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231663153.

It is not an unprimeable number, because it can be changed into a prime (231663353) 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, 20433 + ... + 29678.

It is an arithmetic number, because the mean of its divisors is an integer number (20445696).

Almost surely, 2^231663153 is an apocalyptic number.

231663153 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

231663153 is a deficient number, since it is larger than the sum of its proper divisors (95467983).

231663153 is a wasteful number, since it uses less digits than its factorization.

231663153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50204.

The product of its digits is 9720, while the sum is 30.

The square root of 231663153 is about 15220.4846506279. The cubic root of 231663153 is about 614.1658358335.

The spelling of 231663153 in words is "two hundred thirty-one million, six hundred sixty-three thousand, one hundred fifty-three".