2309398523 has 2 divisors, whose sum is σ = 2309398524. Its totient is φ = 2309398522.

The previous prime is 2309398519. The next prime is 2309398561. The reversal of 2309398523 is 3258939032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2309398523 - 2² = 2309398519 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (2309397523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1154699261 + 1154699262.

It is an arithmetic number, because the mean of its divisors is an integer number (1154699262).

Almost surely, 2^2309398523 is an apocalyptic number.

2309398523 is a deficient number, since it is larger than the sum of its proper divisors (1).

2309398523 is an equidigital number, since it uses as much as digits as its factorization.

2309398523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 44.

The square root of 2309398523 is about 48056.2017121620. The cubic root of 2309398523 is about 1321.8016649459.

The spelling of 2309398523 in words is "two billion, three hundred nine million, three hundred ninety-eight thousand, five hundred twenty-three".