320034445 has 4 divisors (see below), whose sum is σ = 384041340. Its totient is φ = 256027552.

The previous prime is 320034439. The next prime is 320034521. The reversal of 320034445 is 544430023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544430023 = 283 ⋅1923781.

It can be written as a sum of positive squares in 2 ways, for example, as 253350889 + 66683556 = 15917^2 + 8166^2 .

It is a cyclic number.

It is not a de Polignac number, because 320034445 - 2⁵ = 320034413 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32003440 + ... + 32003449.

It is an arithmetic number, because the mean of its divisors is an integer number (96010335).

Almost surely, 2^320034445 is an apocalyptic number.

It is an amenable number.

320034445 is a deficient number, since it is larger than the sum of its proper divisors (64006895).

320034445 is an equidigital number, since it uses as much as digits as its factorization.

320034445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64006894.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 320034445 is about 17889.5065611101. The cubic root of 320034445 is about 684.0149195075.

Adding to 320034445 its reverse (544430023), we get a palindrome (864464468).

The spelling of 320034445 in words is "three hundred twenty million, thirty-four thousand, four hundred forty-five".