224001331 has 2 divisors, whose sum is σ = 224001332. Its totient is φ = 224001330.

The previous prime is 224001329. The next prime is 224001343. The reversal of 224001331 is 133100422.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 224001331 - 2¹ = 224001329 is a prime.

It is a super-2 number, since 2×224001331² = 100353192579543122, which contains 22 as substring.

Together with 224001329, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (224001311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112000665 + 112000666.

It is an arithmetic number, because the mean of its divisors is an integer number (112000666).

Almost surely, 2^224001331 is an apocalyptic number.

224001331 is a deficient number, since it is larger than the sum of its proper divisors (1).

224001331 is an equidigital number, since it uses as much as digits as its factorization.

224001331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 224001331 is about 14966.6740126188. The cubic root of 224001331 is about 607.3189972596.

Adding to 224001331 its reverse (133100422), we get a palindrome (357101753).

Subtracting from 224001331 its reverse (133100422), we obtain a palindrome (90900909).

The spelling of 224001331 in words is "two hundred twenty-four million, one thousand, three hundred thirty-one".