320200123 has 2 divisors, whose sum is σ = 320200124. Its totient is φ = 320200122.

The previous prime is 320200121. The next prime is 320200129. The reversal of 320200123 is 321002023.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (321002023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320200123 - 2¹ = 320200121 is a prime.

Together with 320200121, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (320200121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160100061 + 160100062.

It is an arithmetic number, because the mean of its divisors is an integer number (160100062).

Almost surely, 2^320200123 is an apocalyptic number.

320200123 is a deficient number, since it is larger than the sum of its proper divisors (1).

320200123 is an equidigital number, since it uses as much as digits as its factorization.

320200123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 320200123 is about 17894.1365536312. The cubic root of 320200123 is about 684.1329345892.

Adding to 320200123 its reverse (321002023), we get a palindrome (641202146).

The spelling of 320200123 in words is "three hundred twenty million, two hundred thousand, one hundred twenty-three".