43113220013 has 2 divisors, whose sum is σ = 43113220014. Its totient is φ = 43113220012.

The previous prime is 43113220009. The next prime is 43113220081. The reversal of 43113220013 is 31002231134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37636776004 + 5476444009 = 194002^2 + 74003^2 .

It is a cyclic number.

It is not a de Polignac number, because 43113220013 - 2² = 43113220009 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43113220313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21556610006 + 21556610007.

It is an arithmetic number, because the mean of its divisors is an integer number (21556610007).

Almost surely, 2^43113220013 is an apocalyptic number.

It is an amenable number.

43113220013 is a deficient number, since it is larger than the sum of its proper divisors (1).

43113220013 is an equidigital number, since it uses as much as digits as its factorization.

43113220013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 43113220013 its reverse (31002231134), we get a palindrome (74115451147).

The spelling of 43113220013 in words is "forty-three billion, one hundred thirteen million, two hundred twenty thousand, thirteen".