321303996 has 60 divisors (see below), whose sum is σ = 904575672. Its totient is φ = 98861472.

The previous prime is 321303959. The next prime is 321304013. The reversal of 321303996 is 699303123.

It is a happy number.

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 321303996.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 33930 + ... + 42353.

Almost surely, 2^321303996 is an apocalyptic number.

321303996 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

321303996 is an abundant number, since it is smaller than the sum of its proper divisors (583271676).

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

321303996 is a wasteful number, since it uses less digits than its factorization.

321303996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76312 (or 76301 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 36.

The square root of 321303996 is about 17924.9545606119. The cubic root of 321303996 is about 684.9182035990.

The spelling of 321303996 in words is "three hundred twenty-one million, three hundred three thousand, nine hundred ninety-six".