220382231 has 2 divisors, whose sum is σ = 220382232. Its totient is φ = 220382230.

The previous prime is 220382219. The next prime is 220382329. The reversal of 220382231 is 132283022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220382231 - 2¹⁰ = 220381207 is a prime.

It is a super-2 number, since 2×220382231² = 97136655481074722, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 220382197 and 220382206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220382731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110191115 + 110191116.

It is an arithmetic number, because the mean of its divisors is an integer number (110191116).

Almost surely, 2^220382231 is an apocalyptic number.

220382231 is a deficient number, since it is larger than the sum of its proper divisors (1).

220382231 is an equidigital number, since it uses as much as digits as its factorization.

220382231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 220382231 is about 14845.2763867838. The cubic root of 220382231 is about 604.0304859764.

The spelling of 220382231 in words is "two hundred twenty million, three hundred eighty-two thousand, two hundred thirty-one".