320344432 has 10 divisors (see below), whose sum is σ = 620667368. Its totient is φ = 160172208.

The previous prime is 320344417. The next prime is 320344441. The reversal of 320344432 is 234443023.

It is a super-2 number, since 2×320344432² = 205241110226805248, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320344397 and 320344406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010748 + ... + 10010779.

Almost surely, 2^320344432 is an apocalyptic number.

It is an amenable number.

320344432 is a deficient number, since it is larger than the sum of its proper divisors (300322936).

320344432 is a wasteful number, since it uses less digits than its factorization.

320344432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20021535 (or 20021529 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 25.

The square root of 320344432 is about 17898.1683979116. The cubic root of 320344432 is about 684.2356950243.

Adding to 320344432 its reverse (234443023), we get a palindrome (554787455).

The spelling of 320344432 in words is "three hundred twenty million, three hundred forty-four thousand, four hundred thirty-two".