222968231 has 4 divisors (see below), whose sum is σ = 223791264. Its totient is φ = 222145200.

The previous prime is 222968203. The next prime is 222968321. The reversal of 222968231 is 132869222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222968231 - 2⁶ = 222968167 is a prime.

It is a super-2 number, since 2×222968231² = 99429664070538722, 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 = 222968191 and 222968200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222968531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411110 + ... + 411651.

It is an arithmetic number, because the mean of its divisors is an integer number (55947816).

Almost surely, 2^222968231 is an apocalyptic number.

222968231 is a deficient number, since it is larger than the sum of its proper divisors (823033).

222968231 is an equidigital number, since it uses as much as digits as its factorization.

222968231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823032.

The product of its digits is 20736, while the sum is 35.

The square root of 222968231 is about 14932.1207803848. The cubic root of 222968231 is about 606.3839011847.

Subtracting from 222968231 its reverse (132869222), we obtain a palindrome (90099009).

The spelling of 222968231 in words is "two hundred twenty-two million, nine hundred sixty-eight thousand, two hundred thirty-one".