224273213 has 2 divisors, whose sum is σ = 224273214. Its totient is φ = 224273212.

The previous prime is 224273209. The next prime is 224273233. The reversal of 224273213 is 312372422.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131285764 + 92987449 = 11458^2 + 9643^2 .

It is a cyclic number.

It is not a de Polignac number, because 224273213 - 2² = 224273209 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224273233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112136606 + 112136607.

It is an arithmetic number, because the mean of its divisors is an integer number (112136607).

Almost surely, 2^224273213 is an apocalyptic number.

It is an amenable number.

224273213 is a deficient number, since it is larger than the sum of its proper divisors (1).

224273213 is an equidigital number, since it uses as much as digits as its factorization.

224273213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 26.

The square root of 224273213 is about 14975.7541713264. The cubic root of 224273213 is about 607.5646094075.

The spelling of 224273213 in words is "two hundred twenty-four million, two hundred seventy-three thousand, two hundred thirteen".