321323922 has 40 divisors (see below), whose sum is σ = 722417916. Its totient is φ = 106748928.

The previous prime is 321323921. The next prime is 321323927. The reversal of 321323922 is 229323123.

It can be written as a sum of positive squares in 2 ways, for example, as 265657401 + 55666521 = 16299^2 + 7461^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (321323921) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 47538 + ... + 53874.

Almost surely, 2^321323922 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321323922, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361208958).

321323922 is an abundant number, since it is smaller than the sum of its proper divisors (401093994).

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

321323922 is a wasteful number, since it uses less digits than its factorization.

321323922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6664 (or 6655 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 321323922 is about 17925.5103693033. The cubic root of 321323922 is about 684.9323619435.

The spelling of 321323922 in words is "three hundred twenty-one million, three hundred twenty-three thousand, nine hundred twenty-two".