320311432 has 48 divisors (see below), whose sum is σ = 729034560. Its totient is φ = 131304096.

The previous prime is 320311417. The next prime is 320311447. The reversal of 320311432 is 234113023.

It is an interprime number because it is at equal distance from previous prime (320311417) and next prime (320311447).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8748 + ... + 26779.

It is an arithmetic number, because the mean of its divisors is an integer number (15188220).

Almost surely, 2^320311432 is an apocalyptic number.

It is an amenable number.

320311432 is an abundant number, since it is smaller than the sum of its proper divisors (408723128).

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

320311432 is a wasteful number, since it uses less digits than its factorization.

320311432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35570 (or 35559 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 320311432 is about 17897.2464921283. The cubic root of 320311432 is about 684.2121989047.

Adding to 320311432 its reverse (234113023), we get a palindrome (554424455).

The spelling of 320311432 in words is "three hundred twenty million, three hundred eleven thousand, four hundred thirty-two".