321414493 has 2 divisors, whose sum is σ = 321414494. Its totient is φ = 321414492.

The previous prime is 321414409. The next prime is 321414503. The reversal of 321414493 is 394414123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 317623684 + 3790809 = 17822^2 + 1947^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321414493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321414403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160707246 + 160707247.

It is an arithmetic number, because the mean of its divisors is an integer number (160707247).

Almost surely, 2^321414493 is an apocalyptic number.

It is an amenable number.

321414493 is a deficient number, since it is larger than the sum of its proper divisors (1).

321414493 is an equidigital number, since it uses as much as digits as its factorization.

321414493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 31.

The square root of 321414493 is about 17928.0365071025. The cubic root of 321414493 is about 684.9967094519.

The spelling of 321414493 in words is "three hundred twenty-one million, four hundred fourteen thousand, four hundred ninety-three".