231213022213132 has 12 divisors (see below), whose sum is σ = 405508177910920. Its totient is φ = 115353542810016.

The previous prime is 231213022213093. The next prime is 231213022213133. The reversal of 231213022213132 is 231312220312132.

It is a self number, because there is not a number n which added to its sum of digits gives 231213022213132.

It is not an unprimeable number, because it can be changed into a prime (231213022213133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63242072082 + ... + 63242075737.

Almost surely, 2^{231213022213132} is an apocalyptic number.

It is an amenable number.

231213022213132 is a deficient number, since it is larger than the sum of its proper divisors (174295155697788).

231213022213132 is a wasteful number, since it uses less digits than its factorization.

231213022213132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126484148280 (or 126484148278 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 231213022213132 its reverse (231312220312132), we get a palindrome (462525242525264).

The spelling of 231213022213132 in words is "two hundred thirty-one trillion, two hundred thirteen billion, twenty-two million, two hundred thirteen thousand, one hundred thirty-two".