320111453 has 2 divisors, whose sum is σ = 320111454. Its totient is φ = 320111452.

The previous prime is 320111443. The next prime is 320111459. The reversal of 320111453 is 354111023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 316733209 + 3378244 = 17797^2 + 1838^2 .

It is a cyclic number.

It is not a de Polignac number, because 320111453 - 2⁴ = 320111437 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320111459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160055726 + 160055727.

It is an arithmetic number, because the mean of its divisors is an integer number (160055727).

Almost surely, 2^320111453 is an apocalyptic number.

It is an amenable number.

320111453 is a deficient number, since it is larger than the sum of its proper divisors (1).

320111453 is an equidigital number, since it uses as much as digits as its factorization.

320111453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 320111453 is about 17891.6587548500. The cubic root of 320111453 is about 684.0697785988.

Adding to 320111453 its reverse (354111023), we get a palindrome (674222476).

The spelling of 320111453 in words is "three hundred twenty million, one hundred eleven thousand, four hundred fifty-three".