314221393 has 2 divisors, whose sum is σ = 314221394. Its totient is φ = 314221392.

The previous prime is 314221361. The next prime is 314221399. The reversal of 314221393 is 393122413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248157009 + 66064384 = 15753^2 + 8128^2 .

It is a cyclic number.

It is not a de Polignac number, because 314221393 - 2⁵ = 314221361 is a prime.

It is not a weakly prime, because it can be changed into another prime (314221399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157110696 + 157110697.

It is an arithmetic number, because the mean of its divisors is an integer number (157110697).

Almost surely, 2^314221393 is an apocalyptic number.

It is an amenable number.

314221393 is a deficient number, since it is larger than the sum of its proper divisors (1).

314221393 is an equidigital number, since it uses as much as digits as its factorization.

314221393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 28.

The square root of 314221393 is about 17726.2910108122. The cubic root of 314221393 is about 679.8481444355.

The spelling of 314221393 in words is "three hundred fourteen million, two hundred twenty-one thousand, three hundred ninety-three".