318250997 has 2 divisors, whose sum is σ = 318250998. Its totient is φ = 318250996.

The previous prime is 318250943. The next prime is 318251027. The reversal of 318250997 is 799052813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177449041 + 140801956 = 13321^2 + 11866^2 .

It is a cyclic number.

It is not a de Polignac number, because 318250997 - 2²⁰ = 317202421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318250937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159125498 + 159125499.

It is an arithmetic number, because the mean of its divisors is an integer number (159125499).

Almost surely, 2^318250997 is an apocalyptic number.

It is an amenable number.

318250997 is a deficient number, since it is larger than the sum of its proper divisors (1).

318250997 is an equidigital number, since it uses as much as digits as its factorization.

318250997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 318250997 is about 17839.5907183993. The cubic root of 318250997 is about 682.7419543149.

The spelling of 318250997 in words is "three hundred eighteen million, two hundred fifty thousand, nine hundred ninety-seven".