231313011222 has 64 divisors (see below), whose sum is σ = 491643440640. Its totient is φ = 72452185344.

The previous prime is 231313011203. The next prime is 231313011229. The reversal of 231313011222 is 222110313132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231313011229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 713463 + ... + 985725.

It is an arithmetic number, because the mean of its divisors is an integer number (7681928760).

Almost surely, 2^231313011222 is an apocalyptic number.

231313011222 is an abundant number, since it is smaller than the sum of its proper divisors (260330429418).

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

231313011222 is a wasteful number, since it uses less digits than its factorization.

231313011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272437.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 231313011222 its reverse (222110313132), we get a palindrome (453423324354).

The spelling of 231313011222 in words is "two hundred thirty-one billion, three hundred thirteen million, eleven thousand, two hundred twenty-two".