224331281 has 2 divisors, whose sum is σ = 224331282. Its totient is φ = 224331280.

The previous prime is 224331277. The next prime is 224331287. The reversal of 224331281 is 182133422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 224250625 + 80656 = 14975^2 + 284^2 .

It is a cyclic number.

It is not a de Polignac number, because 224331281 - 2² = 224331277 is a prime.

It is a super-2 number, since 2×224331281² = 100649047270201922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 224331281.

It is not a weakly prime, because it can be changed into another prime (224331287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112165640 + 112165641.

It is an arithmetic number, because the mean of its divisors is an integer number (112165641).

Almost surely, 2^224331281 is an apocalyptic number.

It is an amenable number.

224331281 is a deficient number, since it is larger than the sum of its proper divisors (1).

224331281 is an equidigital number, since it uses as much as digits as its factorization.

224331281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 26.

The square root of 224331281 is about 14977.6927795973. The cubic root of 224331281 is about 607.6170410181.

The spelling of 224331281 in words is "two hundred twenty-four million, three hundred thirty-one thousand, two hundred eighty-one".