224312281 has 2 divisors, whose sum is σ = 224312282. Its totient is φ = 224312280.

The previous prime is 224312269. The next prime is 224312293. The reversal of 224312281 is 182213422.

It is a balanced prime because it is at equal distance from previous prime (224312269) and next prime (224312293).

It can be written as a sum of positive squares in only one way, i.e., 127486681 + 96825600 = 11291^2 + 9840^2 .

It is a cyclic number.

It is not a de Polignac number, because 224312281 - 2²⁷ = 90094553 is a prime.

It is a super-2 number, since 2×224312281² = 100631998814845922, which contains 22 as substring.

It is equal to p_12347143 and since 224312281 and 12347143 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (224312581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112156140 + 112156141.

It is an arithmetic number, because the mean of its divisors is an integer number (112156141).

Almost surely, 2^224312281 is an apocalyptic number.

It is an amenable number.

224312281 is a deficient number, since it is larger than the sum of its proper divisors (1).

224312281 is an equidigital number, since it uses as much as digits as its factorization.

224312281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1536, while the sum is 25.

The square root of 224312281 is about 14977.0584895700. The cubic root of 224312281 is about 607.5998862553.

The spelling of 224312281 in words is "two hundred twenty-four million, three hundred twelve thousand, two hundred eighty-one".