321263353 has 2 divisors, whose sum is σ = 321263354. Its totient is φ = 321263352.

The previous prime is 321263351. The next prime is 321263441. The reversal of 321263353 is 353362123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 299013264 + 22250089 = 17292^2 + 4717^2 .

It is a cyclic number.

It is not a de Polignac number, because 321263353 - 2¹ = 321263351 is a prime.

Together with 321263351, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (321263351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160631676 + 160631677.

It is an arithmetic number, because the mean of its divisors is an integer number (160631677).

Almost surely, 2^321263353 is an apocalyptic number.

It is an amenable number.

321263353 is a deficient number, since it is larger than the sum of its proper divisors (1).

321263353 is an equidigital number, since it uses as much as digits as its factorization.

321263353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 28.

The square root of 321263353 is about 17923.8208259288. The cubic root of 321263353 is about 684.8893230532.

The spelling of 321263353 in words is "three hundred twenty-one million, two hundred sixty-three thousand, three hundred fifty-three".