320540332 has 12 divisors (see below), whose sum is σ = 641080720. Its totient is φ = 137374416.

The previous prime is 320540327. The next prime is 320540357. The reversal of 320540332 is 233045023.

320540332 is an admirable number.

It is a super-2 number, since 2×320540332² = 205492208877340448, which contains 22 as substring.

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, 5723907 + ... + 5723962.

Almost surely, 2^320540332 is an apocalyptic number.

It is an amenable number.

320540332 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

320540332 is a wasteful number, since it uses less digits than its factorization.

320540332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11447880 (or 11447878 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 22.

The square root of 320540332 is about 17903.6401885203. The cubic root of 320540332 is about 684.3751433234.

Adding to 320540332 its reverse (233045023), we get a palindrome (553585355).

The spelling of 320540332 in words is "three hundred twenty million, five hundred forty thousand, three hundred thirty-two".