324628391 has 2 divisors, whose sum is σ = 324628392. Its totient is φ = 324628390.

The previous prime is 324628361. The next prime is 324628399. The reversal of 324628391 is 193826423.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 324628391 - 2¹⁴ = 324612007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (324628399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162314195 + 162314196.

It is an arithmetic number, because the mean of its divisors is an integer number (162314196).

Almost surely, 2^324628391 is an apocalyptic number.

324628391 is a deficient number, since it is larger than the sum of its proper divisors (1).

324628391 is an equidigital number, since it uses as much as digits as its factorization.

324628391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 38.

The square root of 324628391 is about 18017.4468502061. The cubic root of 324628391 is about 687.2722884873.

The spelling of 324628391 in words is "three hundred twenty-four million, six hundred twenty-eight thousand, three hundred ninety-one".