318680029 has 2 divisors, whose sum is σ = 318680030. Its totient is φ = 318680028.

The previous prime is 318680023. The next prime is 318680039. The reversal of 318680029 is 920086813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244203129 + 74476900 = 15627^2 + 8630^2 .

It is a cyclic number.

It is not a de Polignac number, because 318680029 - 2⁵ = 318679997 is a prime.

It is equal to p_17207893 and since 318680029 and 17207893 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 318680029.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318680023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159340014 + 159340015.

It is an arithmetic number, because the mean of its divisors is an integer number (159340015).

Almost surely, 2^318680029 is an apocalyptic number.

It is an amenable number.

318680029 is a deficient number, since it is larger than the sum of its proper divisors (1).

318680029 is an equidigital number, since it uses as much as digits as its factorization.

318680029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 318680029 is about 17851.6113838499. The cubic root of 318680029 is about 683.0486164782.

The spelling of 318680029 in words is "three hundred eighteen million, six hundred eighty thousand, twenty-nine".