231110121 has 36 divisors (see below), whose sum is σ = 359966096. Its totient is φ = 131767680.

The previous prime is 231110111. The next prime is 231110147. The reversal of 231110121 is 121011132.

It is not a de Polignac number, because 231110121 - 2⁹ = 231109609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231110097 and 231110106.

It is not an unprimeable number, because it can be changed into a prime (231110111) 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 35 ways as a sum of consecutive naturals, for example, 103806 + ... + 106008.

Almost surely, 2^231110121 is an apocalyptic number.

It is an amenable number.

231110121 is a deficient number, since it is larger than the sum of its proper divisors (128855975).

231110121 is a wasteful number, since it uses less digits than its factorization.

231110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2262 (or 2234 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 231110121 is about 15202.3064368536. The cubic root of 231110121 is about 613.6767291407.

Adding to 231110121 its reverse (121011132), we get a palindrome (352121253).

The spelling of 231110121 in words is "two hundred thirty-one million, one hundred ten thousand, one hundred twenty-one".