43534313213 has 2 divisors, whose sum is σ = 43534313214. Its totient is φ = 43534313212.

The previous prime is 43534313143. The next prime is 43534313231. The reversal of 43534313213 is 31231343534.

Together with next prime (43534313231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43513125604 + 21187609 = 208598^2 + 4603^2 .

It is a cyclic number.

It is not a de Polignac number, because 43534313213 - 2¹⁸ = 43534051069 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43534313213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43534313233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21767156606 + 21767156607.

It is an arithmetic number, because the mean of its divisors is an integer number (21767156607).

Almost surely, 2^43534313213 is an apocalyptic number.

It is an amenable number.

43534313213 is a deficient number, since it is larger than the sum of its proper divisors (1).

43534313213 is an equidigital number, since it uses as much as digits as its factorization.

43534313213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 32.

Adding to 43534313213 its reverse (31231343534), we get a palindrome (74765656747).

The spelling of 43534313213 in words is "forty-three billion, five hundred thirty-four million, three hundred thirteen thousand, two hundred thirteen".