320144453 has 2 divisors, whose sum is σ = 320144454. Its totient is φ = 320144452.

The previous prime is 320144449. The next prime is 320144483. The reversal of 320144453 is 354441023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 288762049 + 31382404 = 16993^2 + 5602^2 .

It is a cyclic number.

It is not a de Polignac number, because 320144453 - 2² = 320144449 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 (320144413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160072226 + 160072227.

It is an arithmetic number, because the mean of its divisors is an integer number (160072227).

Almost surely, 2^320144453 is an apocalyptic number.

It is an amenable number.

320144453 is a deficient number, since it is larger than the sum of its proper divisors (1).

320144453 is an equidigital number, since it uses as much as digits as its factorization.

320144453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 320144453 is about 17892.5809485384. The cubic root of 320144453 is about 684.0932845026.

Adding to 320144453 its reverse (354441023), we get a palindrome (674585476).

The spelling of 320144453 in words is "three hundred twenty million, one hundred forty-four thousand, four hundred fifty-three".