314221217 has 4 divisors (see below), whose sum is σ = 332704836. Its totient is φ = 295737600.

The previous prime is 314221211. The next prime is 314221231. The reversal of 314221217 is 712122413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 712122413 = 19 ⋅37480127.

It can be written as a sum of positive squares in 2 ways, for example, as 233508961 + 80712256 = 15281^2 + 8984^2 .

It is a cyclic number.

It is not a de Polignac number, because 314221217 - 2¹⁴ = 314204833 is a prime.

It is a super-2 number, since 2×314221217² = 197469946425922178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 314221192 and 314221201.

It is not an unprimeable number, because it can be changed into a prime (314221211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9241784 + ... + 9241817.

It is an arithmetic number, because the mean of its divisors is an integer number (83176209).

Almost surely, 2^314221217 is an apocalyptic number.

It is an amenable number.

314221217 is a deficient number, since it is larger than the sum of its proper divisors (18483619).

314221217 is a wasteful number, since it uses less digits than its factorization.

314221217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18483618.

The product of its digits is 672, while the sum is 23.

The square root of 314221217 is about 17726.2860464340. The cubic root of 314221217 is about 679.8480175045.

The spelling of 314221217 in words is "three hundred fourteen million, two hundred twenty-one thousand, two hundred seventeen".