318034813 has 2 divisors, whose sum is σ = 318034814. Its totient is φ = 318034812.

The previous prime is 318034781. The next prime is 318034817. The reversal of 318034813 is 318430813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183521209 + 134513604 = 13547^2 + 11598^2 .

It is a cyclic number.

It is not a de Polignac number, because 318034813 - 2⁵ = 318034781 is a prime.

It is a super-3 number, since 3×318034813³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318034817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159017406 + 159017407.

It is an arithmetic number, because the mean of its divisors is an integer number (159017407).

Almost surely, 2^318034813 is an apocalyptic number.

It is an amenable number.

318034813 is a deficient number, since it is larger than the sum of its proper divisors (1).

318034813 is an equidigital number, since it uses as much as digits as its factorization.

318034813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 318034813 is about 17833.5305814637. The cubic root of 318034813 is about 682.5873265514.

The spelling of 318034813 in words is "three hundred eighteen million, thirty-four thousand, eight hundred thirteen".