2312321121 has 16 divisors (see below), whose sum is σ = 3737085120. Its totient is φ = 1401406560.

The previous prime is 2312321117. The next prime is 2312321129. The reversal of 2312321121 is 1211232132.

It is not a de Polignac number, because 2312321121 - 2² = 2312321117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2312321094 and 2312321103.

It is not an unprimeable number, because it can be changed into a prime (2312321129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3892500 + ... + 3893093.

It is an arithmetic number, because the mean of its divisors is an integer number (233567820).

Almost surely, 2^2312321121 is an apocalyptic number.

It is an amenable number.

2312321121 is a deficient number, since it is larger than the sum of its proper divisors (1424763999).

2312321121 is a wasteful number, since it uses less digits than its factorization.

2312321121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7785613 (or 7785607 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 2312321121 is about 48086.6002229311. The cubic root of 2312321121 is about 1322.3590202336.

Adding to 2312321121 its reverse (1211232132), we get a palindrome (3523553253).

It can be divided in two parts, 23123 and 21121, that added together give a palindrome (44244).

The spelling of 2312321121 in words is "two billion, three hundred twelve million, three hundred twenty-one thousand, one hundred twenty-one".