231223110522 has 16 divisors (see below), whose sum is σ = 462469355712. Its totient is φ = 77070514400.

The previous prime is 231223110499. The next prime is 231223110539. The reversal of 231223110522 is 225011322132.

It is a super-2 number, since 2×231223110522² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231223110492 and 231223110501.

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, 832638 + ... + 1075049.

It is an arithmetic number, because the mean of its divisors is an integer number (28904334732).

Almost surely, 2^231223110522 is an apocalyptic number.

231223110522 is an abundant number, since it is smaller than the sum of its proper divisors (231246245190).

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

231223110522 is a wasteful number, since it uses less digits than its factorization.

231223110522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927893.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 231223110522 its reverse (225011322132), we get a palindrome (456234432654).

The spelling of 231223110522 in words is "two hundred thirty-one billion, two hundred twenty-three million, one hundred ten thousand, five hundred twenty-two".