43420433213 has 4 divisors (see below), whose sum is σ = 43421938368. Its totient is φ = 43418928060.

The previous prime is 43420433209. The next prime is 43420433219. The reversal of 43420433213 is 31233402434.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43420433213 - 2² = 43420433209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43420433219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 708443 + ... + 767288.

It is an arithmetic number, because the mean of its divisors is an integer number (10855484592).

Almost surely, 2^43420433213 is an apocalyptic number.

It is an amenable number.

43420433213 is a deficient number, since it is larger than the sum of its proper divisors (1505155).

43420433213 is a wasteful number, since it uses less digits than its factorization.

43420433213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505154.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 43420433213 its reverse (31233402434), we get a palindrome (74653835647).

The spelling of 43420433213 in words is "forty-three billion, four hundred twenty million, four hundred thirty-three thousand, two hundred thirteen".