43441213 has 2 divisors, whose sum is σ = 43441214. Its totient is φ = 43441212.

The previous prime is 43441183. The next prime is 43441241. The reversal of 43441213 is 31214434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34363044 + 9078169 = 5862^2 + 3013^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43441213 is a prime.

It is a super-2 number, since 2×43441213² = 3774277973822738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43441283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21720606 + 21720607.

It is an arithmetic number, because the mean of its divisors is an integer number (21720607).

Almost surely, 2^43441213 is an apocalyptic number.

It is an amenable number.

43441213 is a deficient number, since it is larger than the sum of its proper divisors (1).

43441213 is an equidigital number, since it uses as much as digits as its factorization.

43441213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 22.

The square root of 43441213 is about 6590.9948414484. The cubic root of 43441213 is about 351.5339826732.

Adding to 43441213 its reverse (31214434), we get a palindrome (74655647).

The spelling of 43441213 in words is "forty-three million, four hundred forty-one thousand, two hundred thirteen".