328431004 has 24 divisors (see below), whose sum is σ = 634057200. Its totient is φ = 147607680.

The previous prime is 328431001. The next prime is 328431013. The reversal of 328431004 is 400134823.

It is a self number, because there is not a number n which added to its sum of digits gives 328431004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328431001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38019 + ... + 45850.

It is an arithmetic number, because the mean of its divisors is an integer number (26419050).

Almost surely, 2^328431004 is an apocalyptic number.

It is an amenable number.

328431004 is a deficient number, since it is larger than the sum of its proper divisors (305626196).

328431004 is a wasteful number, since it uses less digits than its factorization.

328431004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83973 (or 83971 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 328431004 is about 18122.6654772415. The cubic root of 328431004 is about 689.9453881023.

Adding to 328431004 its reverse (400134823), we get a palindrome (728565827).

The spelling of 328431004 in words is "three hundred twenty-eight million, four hundred thirty-one thousand, four".