231231322 has 16 divisors (see below), whose sum is σ = 396631872. Its totient is φ = 99040320.

The previous prime is 231231293. The next prime is 231231323. The reversal of 231231322 is 223132132.

It is a self number, because there is not a number n which added to its sum of digits gives 231231322.

It is not an unprimeable number, because it can be changed into a prime (231231323) 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, 26433 + ... + 34075.

It is an arithmetic number, because the mean of its divisors is an integer number (24789492).

Almost surely, 2^231231322 is an apocalyptic number.

231231322 is a deficient number, since it is larger than the sum of its proper divisors (165400550).

231231322 is a wasteful number, since it uses less digits than its factorization.

231231322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9813.

The product of its digits is 432, while the sum is 19.

The square root of 231231322 is about 15206.2921844873. The cubic root of 231231322 is about 613.7839871506.

Adding to 231231322 its reverse (223132132), we get a palindrome (454363454).

The spelling of 231231322 in words is "two hundred thirty-one million, two hundred thirty-one thousand, three hundred twenty-two".