231332221322 has 4 divisors (see below), whose sum is σ = 346998331986. Its totient is φ = 115666110660.

The previous prime is 231332221319. The next prime is 231332221361. The reversal of 231332221322 is 223122233132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 221258285161 + 10073936161 = 470381^2 + 100369^2 .

It is a junction number, because it is equal to n+sod(n) for n = 231332221291 and 231332221300.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57833055329 + ... + 57833055332.

Almost surely, 2^231332221322 is an apocalyptic number.

231332221322 is a deficient number, since it is larger than the sum of its proper divisors (115666110664).

231332221322 is a wasteful number, since it uses less digits than its factorization.

231332221322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115666110663.

The product of its digits is 5184, while the sum is 26.

Adding to 231332221322 its reverse (223122233132), we get a palindrome (454454454454).

The spelling of 231332221322 in words is "two hundred thirty-one billion, three hundred thirty-two million, two hundred twenty-one thousand, three hundred twenty-two".