318791423 has 2 divisors, whose sum is σ = 318791424. Its totient is φ = 318791422.

The previous prime is 318791411. The next prime is 318791437. The reversal of 318791423 is 324197813.

It is a weak prime.

It is an emirp because it is prime and its reverse (324197813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 318791423 - 2⁸ = 318791167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318791023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159395711 + 159395712.

It is an arithmetic number, because the mean of its divisors is an integer number (159395712).

Almost surely, 2^318791423 is an apocalyptic number.

318791423 is a deficient number, since it is larger than the sum of its proper divisors (1).

318791423 is an equidigital number, since it uses as much as digits as its factorization.

318791423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 38.

The square root of 318791423 is about 17854.7311097087. The cubic root of 318791423 is about 683.1281933233.

The spelling of 318791423 in words is "three hundred eighteen million, seven hundred ninety-one thousand, four hundred twenty-three".