2231219279 has 2 divisors, whose sum is σ = 2231219280. Its totient is φ = 2231219278.

The previous prime is 2231219273. The next prime is 2231219311. The reversal of 2231219279 is 9729121322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2231219279 - 2¹² = 2231215183 is a prime.

It is a super-3 number, since 3×2231219279³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2231219273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115609639 + 1115609640.

It is an arithmetic number, because the mean of its divisors is an integer number (1115609640).

Almost surely, 2^2231219279 is an apocalyptic number.

2231219279 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231219279 is an equidigital number, since it uses as much as digits as its factorization.

2231219279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 38.

The square root of 2231219279 is about 47235.7838825609. The cubic root of 2231219279 is about 1306.7146233165.

The spelling of 2231219279 in words is "two billion, two hundred thirty-one million, two hundred nineteen thousand, two hundred seventy-nine".