2231131123123 has 32 divisors (see below), whose sum is σ = 2615529369600. Its totient is φ = 1902395113920.

The previous prime is 2231131123057. The next prime is 2231131123181. The reversal of 2231131123123 is 3213211311322.

It is not a de Polignac number, because 2231131123123 - 2³³ = 2222541188531 is a prime.

It is a super-3 number, since 3×2231131123123³ (a number of 38 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2231131123223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109139583 + ... + 109160023.

It is an arithmetic number, because the mean of its divisors is an integer number (81735292800).

Almost surely, 2^{2231131123123} is an apocalyptic number.

2231131123123 is a deficient number, since it is larger than the sum of its proper divisors (384398246477).

2231131123123 is a wasteful number, since it uses less digits than its factorization.

2231131123123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22112 (or 22098 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

Adding to 2231131123123 its reverse (3213211311322), we get a palindrome (5444342434445).

The spelling of 2231131123123 in words is "two trillion, two hundred thirty-one billion, one hundred thirty-one million, one hundred twenty-three thousand, one hundred twenty-three".