318145601 has 2 divisors, whose sum is σ = 318145602. Its totient is φ = 318145600.

The previous prime is 318145579. The next prime is 318145613. The reversal of 318145601 is 106541813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 306250000 + 11895601 = 17500^2 + 3449^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318145601 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_17180705 and since 318145601 and 17180705 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (318145621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159072800 + 159072801.

It is an arithmetic number, because the mean of its divisors is an integer number (159072801).

Almost surely, 2^318145601 is an apocalyptic number.

It is an amenable number.

318145601 is a deficient number, since it is larger than the sum of its proper divisors (1).

318145601 is an equidigital number, since it uses as much as digits as its factorization.

318145601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 318145601 is about 17836.6364822519. The cubic root of 318145601 is about 682.6665775246. Note that the first 3 decimals are identical.

The spelling of 318145601 in words is "three hundred eighteen million, one hundred forty-five thousand, six hundred one".