222423231 has 8 divisors (see below), whose sum is σ = 299622064. Its totient is φ = 146753280.

The previous prime is 222423221. The next prime is 222423239. The reversal of 222423231 is 132324222.

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

It is not a de Polignac number, because 222423231 - 2⁶ = 222423167 is a prime.

It is a super-2 number, since 2×222423231² = 98944187376958722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222423198 and 222423207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222423239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381880 + ... + 382461.

It is an arithmetic number, because the mean of its divisors is an integer number (37452758).

Almost surely, 2^222423231 is an apocalyptic number.

222423231 is a deficient number, since it is larger than the sum of its proper divisors (77198833).

222423231 is an equidigital number, since it uses as much as digits as its factorization.

222423231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764441.

The product of its digits is 1152, while the sum is 21.

The square root of 222423231 is about 14913.8603654453. The cubic root of 222423231 is about 605.8894378348.

Adding to 222423231 its reverse (132324222), we get a palindrome (354747453).

Subtracting from 222423231 its reverse (132324222), we obtain a palindrome (90099009).

The spelling of 222423231 in words is "two hundred twenty-two million, four hundred twenty-three thousand, two hundred thirty-one".