318304897 has 4 divisors (see below), whose sum is σ = 319573296. Its totient is φ = 317036500.

The previous prime is 318304879. The next prime is 318304901. The reversal of 318304897 is 798403813.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 798403813 = 1523 ⋅524231.

It is a cyclic number.

It is not a de Polignac number, because 318304897 - 2⁷ = 318304769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318304867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 633823 + ... + 634324.

It is an arithmetic number, because the mean of its divisors is an integer number (79893324).

Almost surely, 2^318304897 is an apocalyptic number.

It is an amenable number.

318304897 is a deficient number, since it is larger than the sum of its proper divisors (1268399).

318304897 is a wasteful number, since it uses less digits than its factorization.

318304897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268398.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 318304897 is about 17841.1013393232. The cubic root of 318304897 is about 682.7804959214.

The spelling of 318304897 in words is "three hundred eighteen million, three hundred four thousand, eight hundred ninety-seven".