224320279 has 2 divisors, whose sum is σ = 224320280. Its totient is φ = 224320278.

The previous prime is 224320223. The next prime is 224320319. The reversal of 224320279 is 972023422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 224320279 - 2¹³ = 224312087 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 224320279.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224320079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112160139 + 112160140.

It is an arithmetic number, because the mean of its divisors is an integer number (112160140).

Almost surely, 2^224320279 is an apocalyptic number.

224320279 is a deficient number, since it is larger than the sum of its proper divisors (1).

224320279 is an equidigital number, since it uses as much as digits as its factorization.

224320279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 224320279 is about 14977.3254955616. The cubic root of 224320279 is about 607.6071076256.

It can be divided in two parts, 2243 and 20279, that added together give a palindrome (22522).

The spelling of 224320279 in words is "two hundred twenty-four million, three hundred twenty thousand, two hundred seventy-nine".