318125407 has 2 divisors, whose sum is σ = 318125408. Its totient is φ = 318125406.

The previous prime is 318125387. The next prime is 318125411. The reversal of 318125407 is 704521813.

It is a strong prime.

It is an emirp because it is prime and its reverse (704521813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 318125407 - 2²³ = 309736799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318125477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159062703 + 159062704.

It is an arithmetic number, because the mean of its divisors is an integer number (159062704).

Almost surely, 2^318125407 is an apocalyptic number.

318125407 is a deficient number, since it is larger than the sum of its proper divisors (1).

318125407 is an equidigital number, since it uses as much as digits as its factorization.

318125407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 318125407 is about 17836.0703912044. The cubic root of 318125407 is about 682.6521333409.

The spelling of 318125407 in words is "three hundred eighteen million, one hundred twenty-five thousand, four hundred seven".