231110232121 has 6 divisors (see below), whose sum is σ = 239354355422. Its totient is φ = 223140912960.

The previous prime is 231110232079. The next prime is 231110232139. The reversal of 231110232121 is 121232011132.

It can be written as a sum of positive squares in 3 ways, for example, as 5808116521 + 225302115600 = 76211^2 + 474660^2 .

It is not a de Polignac number, because 231110232121 - 2²⁹ = 230573361209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231110232421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 137401200 + ... + 137402881.

Almost surely, 2^231110232121 is an apocalyptic number.

It is an amenable number.

231110232121 is a deficient number, since it is larger than the sum of its proper divisors (8244123301).

231110232121 is an equidigital number, since it uses as much as digits as its factorization.

231110232121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274804139 (or 274804110 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 231110232121 its reverse (121232011132), we get a palindrome (352342243253).

The spelling of 231110232121 in words is "two hundred thirty-one billion, one hundred ten million, two hundred thirty-two thousand, one hundred twenty-one".