231303221022 has 64 divisors (see below), whose sum is σ = 504790030080. Its totient is φ = 70404650496.

The previous prime is 231303221021. The next prime is 231303221029. The reversal of 231303221022 is 220122303132.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 231303221022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231303221021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195078 + ... + 707574.

It is an arithmetic number, because the mean of its divisors is an integer number (7887344220).

Almost surely, 2^231303221022 is an apocalyptic number.

231303221022 is an abundant number, since it is smaller than the sum of its proper divisors (273486809058).

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

231303221022 is a wasteful number, since it uses less digits than its factorization.

231303221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512665.

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

Adding to 231303221022 its reverse (220122303132), we get a palindrome (451425524154).

The spelling of 231303221022 in words is "two hundred thirty-one billion, three hundred three million, two hundred twenty-one thousand, twenty-two".