320123101 has 2 divisors, whose sum is σ = 320123102. Its totient is φ = 320123100.

The previous prime is 320123099. The next prime is 320123113. The reversal of 320123101 is 101321023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244171876 + 75951225 = 15626^2 + 8715^2 .

It is an emirp because it is prime and its reverse (101321023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320123101 - 2¹ = 320123099 is a prime.

Together with 320123099, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320123161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160061550 + 160061551.

It is an arithmetic number, because the mean of its divisors is an integer number (160061551).

Almost surely, 2^320123101 is an apocalyptic number.

It is an amenable number.

320123101 is a deficient number, since it is larger than the sum of its proper divisors (1).

320123101 is an equidigital number, since it uses as much as digits as its factorization.

320123101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 320123101 is about 17891.9842667045. The cubic root of 320123101 is about 684.0780756550.

Adding to 320123101 its reverse (101321023), we get a palindrome (421444124).

The spelling of 320123101 in words is "three hundred twenty million, one hundred twenty-three thousand, one hundred one".