231321322 has 16 divisors (see below), whose sum is σ = 351964800. Its totient is φ = 114004800.

The previous prime is 231321301. The next prime is 231321367. The reversal of 231321322 is 223123132.

It is a self number, because there is not a number n which added to its sum of digits gives 231321322.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158697 + ... + 160147.

It is an arithmetic number, because the mean of its divisors is an integer number (21997800).

Almost surely, 2^231321322 is an apocalyptic number.

231321322 is a deficient number, since it is larger than the sum of its proper divisors (120643478).

231321322 is a wasteful number, since it uses less digits than its factorization.

231321322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2541.

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

The square root of 231321322 is about 15209.2511978730. The cubic root of 231321322 is about 613.8636092840.

Adding to 231321322 its reverse (223123132), we get a palindrome (454444454).

The spelling of 231321322 in words is "two hundred thirty-one million, three hundred twenty-one thousand, three hundred twenty-two".