321240463 has 2 divisors, whose sum is σ = 321240464. Its totient is φ = 321240462.

The previous prime is 321240443. The next prime is 321240503. The reversal of 321240463 is 364042123.

It is a weak prime.

It is an emirp because it is prime and its reverse (364042123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321240463 - 2⁵ = 321240431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321240443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160620231 + 160620232.

It is an arithmetic number, because the mean of its divisors is an integer number (160620232).

Almost surely, 2^321240463 is an apocalyptic number.

321240463 is a deficient number, since it is larger than the sum of its proper divisors (1).

321240463 is an equidigital number, since it uses as much as digits as its factorization.

321240463 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 321240463 is about 17923.1822788254. The cubic root of 321240463 is about 684.8730565553.

Adding to 321240463 its reverse (364042123), we get a palindrome (685282586).

The spelling of 321240463 in words is "three hundred twenty-one million, two hundred forty thousand, four hundred sixty-three".