318003941657 has 2 divisors, whose sum is σ = 318003941658. Its totient is φ = 318003941656.

The previous prime is 318003941639. The next prime is 318003941767. The reversal of 318003941657 is 756149300813.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 246203523721 + 71800417936 = 496189^2 + 267956^2 .

It is a cyclic number.

It is not a de Polignac number, because 318003941657 - 2²² = 317999747353 is a prime.

It is a super-2 number, since 2×318003941657² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (318003971657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159001970828 + 159001970829.

It is an arithmetic number, because the mean of its divisors is an integer number (159001970829).

Almost surely, 2^318003941657 is an apocalyptic number.

It is an amenable number.

318003941657 is a deficient number, since it is larger than the sum of its proper divisors (1).

318003941657 is an equidigital number, since it uses as much as digits as its factorization.

318003941657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 318003941657 in words is "three hundred eighteen billion, three million, nine hundred forty-one thousand, six hundred fifty-seven".