43423013 has 2 divisors, whose sum is σ = 43423014. Its totient is φ = 43423012.

The previous prime is 43423007. The next prime is 43423019. The reversal of 43423013 is 31032434.

It is a balanced prime because it is at equal distance from previous prime (43423007) and next prime (43423019).

It can be written as a sum of positive squares in only one way, i.e., 36699364 + 6723649 = 6058^2 + 2593^2 .

It is a cyclic number.

It is not a de Polignac number, because 43423013 - 2¹⁸ = 43160869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43423019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21711506 + 21711507.

It is an arithmetic number, because the mean of its divisors is an integer number (21711507).

Almost surely, 2^43423013 is an apocalyptic number.

It is an amenable number.

43423013 is a deficient number, since it is larger than the sum of its proper divisors (1).

43423013 is an equidigital number, since it uses as much as digits as its factorization.

43423013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 43423013 is about 6589.6140251156. The cubic root of 43423013 is about 351.4848832755.

Adding to 43423013 its reverse (31032434), we get a palindrome (74455447).

The spelling of 43423013 in words is "forty-three million, four hundred twenty-three thousand, thirteen".