220356243 has 24 divisors (see below), whose sum is σ = 338324480. Its totient is φ = 137810160.

The previous prime is 220356223. The next prime is 220356247. The reversal of 220356243 is 342653022.

220356243 is a `hidden beast` number, since 2 + 2 + 0 + 35 + 624 + 3 = 666.

220356243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 220356243 - 2²¹ = 218259091 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220356247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11358 + ... + 23868.

Almost surely, 2^220356243 is an apocalyptic number.

220356243 is a deficient number, since it is larger than the sum of its proper divisors (117968237).

220356243 is a wasteful number, since it uses less digits than its factorization.

220356243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12639 (or 12636 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 220356243 is about 14844.4010657217. The cubic root of 220356243 is about 604.0067421363.

The spelling of 220356243 in words is "two hundred twenty million, three hundred fifty-six thousand, two hundred forty-three".