2819221317 has 12 divisors (see below), whose sum is σ = 4442409504. Its totient is φ = 1708618920.

The previous prime is 2819221303. The next prime is 2819221331. The reversal of 2819221317 is 7131229182.

It is an interprime number because it is at equal distance from previous prime (2819221303) and next prime (2819221331).

It is not a de Polignac number, because 2819221317 - 2²⁶ = 2752112453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2819221337) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14238393 + ... + 14238590.

It is an arithmetic number, because the mean of its divisors is an integer number (370200792).

Almost surely, 2^2819221317 is an apocalyptic number.

It is an amenable number.

2819221317 is a deficient number, since it is larger than the sum of its proper divisors (1623188187).

2819221317 is a wasteful number, since it uses less digits than its factorization.

2819221317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28477000 (or 28476997 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 2819221317 is about 53096.3399586073. The cubic root of 2819221317 is about 1412.6775934794.

The spelling of 2819221317 in words is "two billion, eight hundred nineteen million, two hundred twenty-one thousand, three hundred seventeen".