318377923 has 2 divisors, whose sum is σ = 318377924. Its totient is φ = 318377922.

The previous prime is 318377897. The next prime is 318377993. The reversal of 318377923 is 329773813.

It is a weak prime.

It is an emirp because it is prime and its reverse (329773813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 318377923 - 2¹³ = 318369731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 318377923.

It is not a weakly prime, because it can be changed into another prime (318377993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159188961 + 159188962.

It is an arithmetic number, because the mean of its divisors is an integer number (159188962).

Almost surely, 2^318377923 is an apocalyptic number.

318377923 is a deficient number, since it is larger than the sum of its proper divisors (1).

318377923 is an equidigital number, since it uses as much as digits as its factorization.

318377923 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 43.

The square root of 318377923 is about 17843.1477884369. The cubic root of 318377923 is about 682.8327067800.

The spelling of 318377923 in words is "three hundred eighteen million, three hundred seventy-seven thousand, nine hundred twenty-three".