320013123 has 4 divisors (see below), whose sum is σ = 426684168. Its totient is φ = 213342080.

The previous prime is 320013101. The next prime is 320013131. The reversal of 320013123 is 321310023.

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

It is a cyclic number.

It is not a de Polignac number, because 320013123 - 2⁸ = 320012867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320013163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53335518 + ... + 53335523.

It is an arithmetic number, because the mean of its divisors is an integer number (106671042).

Almost surely, 2^320013123 is an apocalyptic number.

320013123 is a deficient number, since it is larger than the sum of its proper divisors (106671045).

320013123 is a wasteful number, since it uses less digits than its factorization.

320013123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106671044.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 320013123 is about 17888.9106152387. The cubic root of 320013123 is about 683.9997285488. Note that the first 3 decimals are identical.

Adding to 320013123 its reverse (321310023), we get a palindrome (641323146).

The spelling of 320013123 in words is "three hundred twenty million, thirteen thousand, one hundred twenty-three".