320016434 has 16 divisors (see below), whose sum is σ = 501880320. Its totient is φ = 153039700.

The previous prime is 320016409. The next prime is 320016443. The reversal of 320016434 is 434610023.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17759 + ... + 30909.

It is an arithmetic number, because the mean of its divisors is an integer number (31367520).

Almost surely, 2^320016434 is an apocalyptic number.

320016434 is a deficient number, since it is larger than the sum of its proper divisors (181863886).

320016434 is an equidigital number, since it uses as much as digits as its factorization.

320016434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13222 (or 13176 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 320016434 is about 17889.0031583652. The cubic root of 320016434 is about 684.0020875305.

Adding to 320016434 its reverse (434610023), we get a palindrome (754626457).

The spelling of 320016434 in words is "three hundred twenty million, sixteen thousand, four hundred thirty-four".