231231203022 has 16 divisors (see below), whose sum is σ = 464131948752. Its totient is φ = 76798810560.

The previous prime is 231231203017. The next prime is 231231203107. The reversal of 231231203022 is 220302132132.

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 231231203022.

It is a congruent 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, 69562479 + ... + 69565802.

It is an arithmetic number, because the mean of its divisors is an integer number (29008246797).

Almost surely, 2^231231203022 is an apocalyptic number.

231231203022 is an abundant number, since it is smaller than the sum of its proper divisors (232900745730).

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

231231203022 is a wasteful number, since it uses less digits than its factorization.

231231203022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139128563.

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

Adding to 231231203022 its reverse (220302132132), we get a palindrome (451533335154).

The spelling of 231231203022 in words is "two hundred thirty-one billion, two hundred thirty-one million, two hundred three thousand, twenty-two".