2316809947 has 2 divisors, whose sum is σ = 2316809948. Its totient is φ = 2316809946.

The previous prime is 2316809923. The next prime is 2316809977. The reversal of 2316809947 is 7499086132.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2316809947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2316809947.

It is not a weakly prime, because it can be changed into another prime (2316809977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1158404973 + 1158404974.

It is an arithmetic number, because the mean of its divisors is an integer number (1158404974).

Almost surely, 2^2316809947 is an apocalyptic number.

2316809947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2316809947 is an equidigital number, since it uses as much as digits as its factorization.

2316809947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 2316809947 is about 48133.2519886201. The cubic root of 2316809947 is about 1323.2141498296.

The spelling of 2316809947 in words is "two billion, three hundred sixteen million, eight hundred nine thousand, nine hundred forty-seven".