320314553 has 4 divisors (see below), whose sum is σ = 344954148. Its totient is φ = 295674960.

The previous prime is 320314523. The next prime is 320314571. The reversal of 320314553 is 355413023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 120714169 + 199600384 = 10987^2 + 14128^2 .

It is a cyclic number.

It is not a de Polignac number, because 320314553 - 2¹² = 320310457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (320314523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12319778 + ... + 12319803.

It is an arithmetic number, because the mean of its divisors is an integer number (86238537).

Almost surely, 2^320314553 is an apocalyptic number.

It is an amenable number.

320314553 is a deficient number, since it is larger than the sum of its proper divisors (24639595).

320314553 is a wasteful number, since it uses less digits than its factorization.

320314553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24639594.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 320314553 is about 17897.3336840994. Note that the first 3 decimals coincide. The cubic root of 320314553 is about 684.2144211371.

Adding to 320314553 its reverse (355413023), we get a palindrome (675727576).

The spelling of 320314553 in words is "three hundred twenty million, three hundred fourteen thousand, five hundred fifty-three".