43143040013 has 2 divisors, whose sum is σ = 43143040014. Its totient is φ = 43143040012.

The previous prime is 43143039949. The next prime is 43143040067. The reversal of 43143040013 is 31004034134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42535762564 + 607277449 = 206242^2 + 24643^2 .

It is a cyclic number.

It is not a de Polignac number, because 43143040013 - 2⁶ = 43143039949 is a prime.

It is a super-2 number, since 2×43143040013² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43143040813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21571520006 + 21571520007.

It is an arithmetic number, because the mean of its divisors is an integer number (21571520007).

Almost surely, 2^43143040013 is an apocalyptic number.

It is an amenable number.

43143040013 is a deficient number, since it is larger than the sum of its proper divisors (1).

43143040013 is an equidigital number, since it uses as much as digits as its factorization.

43143040013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 43143040013 its reverse (31004034134), we get a palindrome (74147074147).

The spelling of 43143040013 in words is "forty-three billion, one hundred forty-three million, forty thousand, thirteen".