318426021 has 12 divisors (see below), whose sum is σ = 460107648. Its totient is φ = 212210664.

The previous prime is 318426019. The next prime is 318426029. The reversal of 318426021 is 120624813.

318426021 is a `hidden beast` number, since 3 + 18 + 42 + 602 + 1 = 666.

It is not a de Polignac number, because 318426021 - 2¹ = 318426019 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318426029) 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 in 11 ways as a sum of consecutive naturals, for example, 38566 + ... + 46088.

It is an arithmetic number, because the mean of its divisors is an integer number (38342304).

Almost surely, 2^318426021 is an apocalyptic number.

It is an amenable number.

318426021 is a deficient number, since it is larger than the sum of its proper divisors (141681627).

318426021 is a wasteful number, since it uses less digits than its factorization.

318426021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12232 (or 12229 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 318426021 is about 17844.4955378402. The cubic root of 318426021 is about 682.8670906902.

The spelling of 318426021 in words is "three hundred eighteen million, four hundred twenty-six thousand, twenty-one".