318222396 has 36 divisors (see below), whose sum is σ = 816407592. Its totient is φ = 104490144.

The previous prime is 318222379. The next prime is 318222413. The reversal of 318222396 is 693222813.

It is an interprime number because it is at equal distance from previous prime (318222379) and next prime (318222413).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 318222396.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 63555 + ... + 68378.

Almost surely, 2^318222396 is an apocalyptic number.

318222396 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

318222396 is an abundant number, since it is smaller than the sum of its proper divisors (498185196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

318222396 is a wasteful number, since it uses less digits than its factorization.

318222396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132010 (or 132005 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 318222396 is about 17838.7890844642. The cubic root of 318222396 is about 682.7215011843.

The spelling of 318222396 in words is "three hundred eighteen million, two hundred twenty-two thousand, three hundred ninety-six".