2321121131 has 20 divisors (see below), whose sum is σ = 2714169000. Its totient is φ = 1984866912.

The previous prime is 2321121119. The next prime is 2321121161. The reversal of 2321121131 is 1311211232.

It is not a de Polignac number, because 2321121131 - 2³⁰ = 1247379307 is a prime.

It is a super-2 number, since 2×2321121131² = 10775206609549438322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2321121161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1365320 + ... + 1367018.

It is an arithmetic number, because the mean of its divisors is an integer number (135708450).

Almost surely, 2^2321121131 is an apocalyptic number.

2321121131 is a deficient number, since it is larger than the sum of its proper divisors (393047869).

2321121131 is an frugal number, since it uses more digits than its factorization.

2321121131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2296 (or 2275 counting only the distinct ones).

The product of its digits is 72, while the sum is 17.

The square root of 2321121131 is about 48178.0150172254. The cubic root of 2321121131 is about 1324.0343990828.

Adding to 2321121131 its reverse (1311211232), we get a palindrome (3632332363).

The spelling of 2321121131 in words is "two billion, three hundred twenty-one million, one hundred twenty-one thousand, one hundred thirty-one".