231323222 has 8 divisors (see below), whose sum is σ = 373676016. Its totient is φ = 106764552.

The previous prime is 231323219. The next prime is 231323231. The reversal of 231323222 is 222323132.

231323222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×231323222² = 107020866072922568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231323194 and 231323203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4448498 + ... + 4448549.

It is an arithmetic number, because the mean of its divisors is an integer number (46709502).

Almost surely, 2^231323222 is an apocalyptic number.

231323222 is a deficient number, since it is larger than the sum of its proper divisors (142352794).

231323222 is a wasteful number, since it uses less digits than its factorization.

231323222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8897062.

The product of its digits is 864, while the sum is 20.

The square root of 231323222 is about 15209.3136597284. The cubic root of 231323222 is about 613.8652899731.

Adding to 231323222 its reverse (222323132), we get a palindrome (453646354).

The spelling of 231323222 in words is "two hundred thirty-one million, three hundred twenty-three thousand, two hundred twenty-two".