43213441 has 2 divisors, whose sum is σ = 43213442. Its totient is φ = 43213440.

The previous prime is 43213399. The next prime is 43213453. The reversal of 43213441 is 14431234.

43213441 is nontrivially palindromic in base 14.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40640625 + 2572816 = 6375^2 + 1604^2 .

It is a cyclic number.

It is not a de Polignac number, because 43213441 - 2¹³ = 43205249 is a prime.

It is equal to p_2616700 and since 43213441 and 2616700 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 (43213141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21606720 + 21606721.

It is an arithmetic number, because the mean of its divisors is an integer number (21606721).

Almost surely, 2^43213441 is an apocalyptic number.

It is an amenable number.

43213441 is a deficient number, since it is larger than the sum of its proper divisors (1).

43213441 is an equidigital number, since it uses as much as digits as its factorization.

43213441 is an evil number, because the sum of its binary digits is even.

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

The square root of 43213441 is about 6573.6931020546. The cubic root of 43213441 is about 350.9185152958.

Adding to 43213441 its reverse (14431234), we get a palindrome (57644675).

The spelling of 43213441 in words is "forty-three million, two hundred thirteen thousand, four hundred forty-one".