231711022452 has 96 divisors (see below), whose sum is σ = 677981912832. Its totient is φ = 59957554176.

The previous prime is 231711022451. The next prime is 231711022457. The reversal of 231711022452 is 254220117132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231711022451) 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, 1943913 + ... + 2059664.

It is an arithmetic number, because the mean of its divisors is an integer number (7062311592).

Almost surely, 2^231711022452 is an apocalyptic number.

It is an amenable number.

231711022452 is an abundant number, since it is smaller than the sum of its proper divisors (446270890380).

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

231711022452 is a wasteful number, since it uses less digits than its factorization.

231711022452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4003657 (or 4003655 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

Adding to 231711022452 its reverse (254220117132), we get a palindrome (485931139584).

The spelling of 231711022452 in words is "two hundred thirty-one billion, seven hundred eleven million, twenty-two thousand, four hundred fifty-two".