318434087 has 2 divisors, whose sum is σ = 318434088. Its totient is φ = 318434086.

The previous prime is 318434063. The next prime is 318434093. The reversal of 318434087 is 780434813.

It is a strong prime.

It is an emirp because it is prime and its reverse (780434813) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318434087 is a prime.

It is a Chen prime.

It is equal to p_17195366 and since 318434087 and 17195366 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 318434087.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318434047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159217043 + 159217044.

It is an arithmetic number, because the mean of its divisors is an integer number (159217044).

Almost surely, 2^318434087 is an apocalyptic number.

318434087 is a deficient number, since it is larger than the sum of its proper divisors (1).

318434087 is an equidigital number, since it uses as much as digits as its factorization.

318434087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 318434087 is about 17844.7215444792. The cubic root of 318434087 is about 682.8728565082.

The spelling of 318434087 in words is "three hundred eighteen million, four hundred thirty-four thousand, eighty-seven".