231663553 has 8 divisors (see below), whose sum is σ = 252920160. Its totient is φ = 210439680.

The previous prime is 231663547. The next prime is 231663563. The reversal of 231663553 is 355366132.

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

It is a de Polignac number, because none of the positive numbers 2^k-231663553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231663503) by changing a digit.

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, 8026 + ... + 22972.

It is an arithmetic number, because the mean of its divisors is an integer number (31615020).

Almost surely, 2^231663553 is an apocalyptic number.

It is an amenable number.

231663553 is a deficient number, since it is larger than the sum of its proper divisors (21256607).

231663553 is a wasteful number, since it uses less digits than its factorization.

231663553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16367.

The product of its digits is 48600, while the sum is 34.

The square root of 231663553 is about 15220.4977908083. The cubic root of 231663553 is about 614.1661893154.

The spelling of 231663553 in words is "two hundred thirty-one million, six hundred sixty-three thousand, five hundred fifty-three".