231231020322 has 16 divisors (see below), whose sum is σ = 462532520160. Its totient is φ = 77065260192.

The previous prime is 231231020309. The next prime is 231231020341. The reversal of 231231020322 is 223020132132.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2893948 + ... + 2972775.

It is an arithmetic number, because the mean of its divisors is an integer number (28908282510).

Almost surely, 2^231231020322 is an apocalyptic number.

231231020322 is an abundant number, since it is smaller than the sum of its proper divisors (231301499838).

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

231231020322 is a wasteful number, since it uses less digits than its factorization.

231231020322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5873297.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 231231020322 its reverse (223020132132), we get a palindrome (454251152454).

The spelling of 231231020322 in words is "two hundred thirty-one billion, two hundred thirty-one million, twenty thousand, three hundred twenty-two".