320213123 has 2 divisors, whose sum is σ = 320213124. Its totient is φ = 320213122.

The previous prime is 320213111. The next prime is 320213129. The reversal of 320213123 is 321312023.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320213123 is a prime.

It is not a weakly prime, because it can be changed into another prime (320213129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160106561 + 160106562.

It is an arithmetic number, because the mean of its divisors is an integer number (160106562).

Almost surely, 2^320213123 is an apocalyptic number.

320213123 is a deficient number, since it is larger than the sum of its proper divisors (1).

320213123 is an equidigital number, since it uses as much as digits as its factorization.

320213123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 320213123 is about 17894.4997974238. The cubic root of 320213123 is about 684.1421929740.

Adding to 320213123 its reverse (321312023), we get a palindrome (641525146).

The spelling of 320213123 in words is "three hundred twenty million, two hundred thirteen thousand, one hundred twenty-three".