320123604 has 24 divisors (see below), whose sum is σ = 761050080. Its totient is φ = 104694304.

The previous prime is 320123603. The next prime is 320123677. The reversal of 320123604 is 406321023.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320123603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251034 + ... + 252305.

It is an arithmetic number, because the mean of its divisors is an integer number (31710420).

Almost surely, 2^320123604 is an apocalyptic number.

It is an amenable number.

320123604 is an abundant number, since it is smaller than the sum of its proper divisors (440926476).

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

320123604 is a wasteful number, since it uses less digits than its factorization.

320123604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503399 (or 503397 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 320123604 is about 17891.9983232729. The cubic root of 320123604 is about 684.0784339454.

Adding to 320123604 its reverse (406321023), we get a palindrome (726444627).

The spelling of 320123604 in words is "three hundred twenty million, one hundred twenty-three thousand, six hundred four".