220563231 has 32 divisors (see below), whose sum is σ = 347493888. Its totient is φ = 121820160.

The previous prime is 220563227. The next prime is 220563247. The reversal of 220563231 is 132365022.

It is not a de Polignac number, because 220563231 - 2² = 220563227 is a prime.

It is a super-2 number, since 2×220563231² = 97296277738318722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220563131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96160 + ... + 98426.

It is an arithmetic number, because the mean of its divisors is an integer number (10859184).

Almost surely, 2^220563231 is an apocalyptic number.

220563231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

220563231 is a deficient number, since it is larger than the sum of its proper divisors (126930657).

220563231 is a wasteful number, since it uses less digits than its factorization.

220563231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2431.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 220563231 is about 14851.3713508214. The cubic root of 220563231 is about 604.1958042061.

The spelling of 220563231 in words is "two hundred twenty million, five hundred sixty-three thousand, two hundred thirty-one".