8315438723 has 2 divisors, whose sum is σ = 8315438724. Its totient is φ = 8315438722.

The previous prime is 8315438713. The next prime is 8315438737. The reversal of 8315438723 is 3278345138.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8315438723 - 2²⁸ = 8047003267 is a prime.

It is not a weakly prime, because it can be changed into another prime (8315438713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4157719361 + 4157719362.

It is an arithmetic number, because the mean of its divisors is an integer number (4157719362).

Almost surely, 2^8315438723 is an apocalyptic number.

8315438723 is a deficient number, since it is larger than the sum of its proper divisors (1).

8315438723 is an equidigital number, since it uses as much as digits as its factorization.

8315438723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 483840, while the sum is 44.

The square root of 8315438723 is about 91189.0274265495. The cubic root of 8315438723 is about 2025.9484434211.

The spelling of 8315438723 in words is "eight billion, three hundred fifteen million, four hundred thirty-eight thousand, seven hundred twenty-three".