2316531121 has 4 divisors (see below), whose sum is σ = 2317375332. Its totient is φ = 2315686912.

The previous prime is 2316531103. The next prime is 2316531179. The reversal of 2316531121 is 1211356132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2236249521 + 80281600 = 47289^2 + 8960^2 .

It is a cyclic number.

It is not a de Polignac number, because 2316531121 - 2²⁹ = 1779660209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2316531421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417976 + ... + 423481.

It is an arithmetic number, because the mean of its divisors is an integer number (579343833).

Almost surely, 2^2316531121 is an apocalyptic number.

It is an amenable number.

2316531121 is a deficient number, since it is larger than the sum of its proper divisors (844211).

2316531121 is an equidigital number, since it uses as much as digits as its factorization.

2316531121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844210.

The product of its digits is 1080, while the sum is 25.

The square root of 2316531121 is about 48130.3555046085. The cubic root of 2316531121 is about 1323.1610651544.

Adding to 2316531121 its reverse (1211356132), we get a palindrome (3527887253).

The spelling of 2316531121 in words is "two billion, three hundred sixteen million, five hundred thirty-one thousand, one hundred twenty-one".