231031221322 has 8 divisors (see below), whose sum is σ = 378051089472. Its totient is φ = 105014191500.

The previous prime is 231031221251. The next prime is 231031221359. The reversal of 231031221322 is 223122130132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 10501419151 = 231031221322 / (2 + 3 + 1 + 0 + 3 + 1 + 2 + 2 + 1 + 3 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 231031221293 and 231031221302.

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 3 ways as a sum of consecutive naturals, for example, 5250709554 + ... + 5250709597.

It is an arithmetic number, because the mean of its divisors is an integer number (47256386184).

Almost surely, 2^231031221322 is an apocalyptic number.

231031221322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

231031221322 is a deficient number, since it is larger than the sum of its proper divisors (147019868150).

231031221322 is a wasteful number, since it uses less digits than its factorization.

231031221322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10501419164.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 231031221322 its reverse (223122130132), we get a palindrome (454153351454).

The spelling of 231031221322 in words is "two hundred thirty-one billion, thirty-one million, two hundred twenty-one thousand, three hundred twenty-two".