224012381 has 2 divisors, whose sum is σ = 224012382. Its totient is φ = 224012380.

The previous prime is 224012353. The next prime is 224012407. The reversal of 224012381 is 183210422.

It is a happy number.

224012381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 125328025 + 98684356 = 11195^2 + 9934^2 .

It is a cyclic number.

It is not a de Polignac number, because 224012381 - 2⁶ = 224012317 is a prime.

It is a super-2 number, since 2×224012381² = 100363093682578322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (224012351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112006190 + 112006191.

It is an arithmetic number, because the mean of its divisors is an integer number (112006191).

Almost surely, 2^224012381 is an apocalyptic number.

It is an amenable number.

224012381 is a deficient number, since it is larger than the sum of its proper divisors (1).

224012381 is an equidigital number, since it uses as much as digits as its factorization.

224012381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 224012381 is about 14967.0431615600. The cubic root of 224012381 is about 607.3289834571.

The spelling of 224012381 in words is "two hundred twenty-four million, twelve thousand, three hundred eighty-one".