316240789 has 2 divisors, whose sum is σ = 316240790. Its totient is φ = 316240788.

The previous prime is 316240753. The next prime is 316240811. The reversal of 316240789 is 987042613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 302238225 + 14002564 = 17385^2 + 3742^2 .

It is an emirp because it is prime and its reverse (987042613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 316240789 - 2⁹ = 316240277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316240709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158120394 + 158120395.

It is an arithmetic number, because the mean of its divisors is an integer number (158120395).

Almost surely, 2^316240789 is an apocalyptic number.

It is an amenable number.

316240789 is a deficient number, since it is larger than the sum of its proper divisors (1).

316240789 is an equidigital number, since it uses as much as digits as its factorization.

316240789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 316240789 is about 17783.1602646999. The cubic root of 316240789 is about 681.3014213185.

The spelling of 316240789 in words is "three hundred sixteen million, two hundred forty thousand, seven hundred eighty-nine".