2331313209 has 12 divisors (see below), whose sum is σ = 3400794852. Its totient is φ = 1538820000.

The previous prime is 2331313183. The next prime is 2331313247. The reversal of 2331313209 is 9023131332.

2331313209 is a `hidden beast` number, since 2 + 331 + 3 + 1 + 320 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1285437609 + 1045875600 = 35853^2 + 32340^2 .

It is not a de Polignac number, because 2331313209 - 2⁸ = 2331312953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2331313249) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1281442 + ... + 1283259.

It is an arithmetic number, because the mean of its divisors is an integer number (283399571).

Almost surely, 2^2331313209 is an apocalyptic number.

It is an amenable number.

2331313209 is a deficient number, since it is larger than the sum of its proper divisors (1069481643).

2331313209 is a wasteful number, since it uses less digits than its factorization.

2331313209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564808 (or 2564805 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 27.

The square root of 2331313209 is about 48283.6743527251. The cubic root of 2331313209 is about 1325.9695211492.

The spelling of 2331313209 in words is "two billion, three hundred thirty-one million, three hundred thirteen thousand, two hundred nine".