231264222 has 24 divisors (see below), whose sum is σ = 538043976. Its totient is φ = 66075408.

The previous prime is 231264217. The next prime is 231264223. The reversal of 231264222 is 222462132.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 231264192 and 231264201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231264223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 393013 + ... + 393600.

It is an arithmetic number, because the mean of its divisors is an integer number (22418499).

Almost surely, 2^231264222 is an apocalyptic number.

231264222 is an abundant number, since it is smaller than the sum of its proper divisors (306779754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231264222 is a wasteful number, since it uses less digits than its factorization.

231264222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786632 (or 786625 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

The square root of 231264222 is about 15207.3739350356. The cubic root of 231264222 is about 613.8130958592.

The spelling of 231264222 in words is "two hundred thirty-one million, two hundred sixty-four thousand, two hundred twenty-two".