318667801 has 2 divisors, whose sum is σ = 318667802. Its totient is φ = 318667800.

The previous prime is 318667787. The next prime is 318667841. The reversal of 318667801 is 108766813.

318667801 = T₁₄₅₇₄ + T₁₄₅₇₅ + T₁₄₅₇₆.

It is an a-pointer prime, because the next prime (318667841) can be obtained adding 318667801 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222725776 + 95942025 = 14924^2 + 9795^2 .

It is an emirp because it is prime and its reverse (108766813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 318667801 - 2¹³ = 318659609 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (318667841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159333900 + 159333901.

It is an arithmetic number, because the mean of its divisors is an integer number (159333901).

Almost surely, 2^318667801 is an apocalyptic number.

318667801 is the 14576-th centered triangular number.

It is an amenable number.

318667801 is a deficient number, since it is larger than the sum of its proper divisors (1).

318667801 is an equidigital number, since it uses as much as digits as its factorization.

318667801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 318667801 is about 17851.2688904739. The cubic root of 318667801 is about 683.0398799980.

The spelling of 318667801 in words is "three hundred eighteen million, six hundred sixty-seven thousand, eight hundred one".