314221813 has 4 divisors (see below), whose sum is σ = 314294848. Its totient is φ = 314148780.

The previous prime is 314221811. The next prime is 314221819. The reversal of 314221813 is 318122413.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 314221813 - 2¹ = 314221811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (314221811) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29631 + ... + 38812.

It is an arithmetic number, because the mean of its divisors is an integer number (78573712).

Almost surely, 2^314221813 is an apocalyptic number.

It is an amenable number.

314221813 is a deficient number, since it is larger than the sum of its proper divisors (73035).

314221813 is an equidigital number, since it uses as much as digits as its factorization.

314221813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73034.

The product of its digits is 1152, while the sum is 25.

The square root of 314221813 is about 17726.3028576181. The cubic root of 314221813 is about 679.8484473388.

The spelling of 314221813 in words is "three hundred fourteen million, two hundred twenty-one thousand, eight hundred thirteen".