2317731389 has 2 divisors, whose sum is σ = 2317731390. Its totient is φ = 2317731388.

The previous prime is 2317731379. The next prime is 2317731391. The reversal of 2317731389 is 9831377132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2122905625 + 194825764 = 46075^2 + 13958^2 .

It is a cyclic number.

It is not a de Polignac number, because 2317731389 - 2⁴ = 2317731373 is a prime.

Together with 2317731391, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2317731349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1158865694 + 1158865695.

It is an arithmetic number, because the mean of its divisors is an integer number (1158865695).

Almost surely, 2^2317731389 is an apocalyptic number.

It is an amenable number.

2317731389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2317731389 is an equidigital number, since it uses as much as digits as its factorization.

2317731389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 44.

The square root of 2317731389 is about 48142.8228191908. The cubic root of 2317731389 is about 1323.3895495551.

The spelling of 2317731389 in words is "two billion, three hundred seventeen million, seven hundred thirty-one thousand, three hundred eighty-nine".