231123102131 has 8 divisors (see below), whose sum is σ = 233724975120. Its totient is φ = 228530993152.

The previous prime is 231123102127. The next prime is 231123102137. The reversal of 231123102131 is 131201321132.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 231123102131 - 2² = 231123102127 is a prime.

It is a super-2 number, since 2×231123102131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231123102137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2393390 + ... + 2488083.

It is an arithmetic number, because the mean of its divisors is an integer number (29215621890).

Almost surely, 2^231123102131 is an apocalyptic number.

231123102131 is a deficient number, since it is larger than the sum of its proper divisors (2601872989).

231123102131 is a wasteful number, since it uses less digits than its factorization.

231123102131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4882005.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 231123102131 its reverse (131201321132), we get a palindrome (362324423263).

The spelling of 231123102131 in words is "two hundred thirty-one billion, one hundred twenty-three million, one hundred two thousand, one hundred thirty-one".