323404040 has 16 divisors (see below), whose sum is σ = 727659180. Its totient is φ = 129361600.

The previous prime is 323404033. The next prime is 323404057. The reversal of 323404040 is 40404323.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 301855876 + 21548164 = 17374^2 + 4642^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4042511 + ... + 4042590.

Almost surely, 2^323404040 is an apocalyptic number.

It is an amenable number.

323404040 is an abundant number, since it is smaller than the sum of its proper divisors (404255140).

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

323404040 is a wasteful number, since it uses less digits than its factorization.

323404040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8085112 (or 8085108 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 323404040 is about 17983.4379360566. The cubic root of 323404040 is about 686.4071735530.

Adding to 323404040 its reverse (40404323), we get a palindrome (363808363).

The spelling of 323404040 in words is "three hundred twenty-three million, four hundred four thousand, forty".