321425263 has 2 divisors, whose sum is σ = 321425264. Its totient is φ = 321425262.

The previous prime is 321425233. The next prime is 321425297. The reversal of 321425263 is 362524123.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321425263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321425233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160712631 + 160712632.

It is an arithmetic number, because the mean of its divisors is an integer number (160712632).

Almost surely, 2^321425263 is an apocalyptic number.

321425263 is a deficient number, since it is larger than the sum of its proper divisors (1).

321425263 is an equidigital number, since it uses as much as digits as its factorization.

321425263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 28.

The square root of 321425263 is about 17928.3368721139. The cubic root of 321425263 is about 685.0043603537.

Adding to 321425263 its reverse (362524123), we get a palindrome (683949386).

The spelling of 321425263 in words is "three hundred twenty-one million, four hundred twenty-five thousand, two hundred sixty-three".