43203113281 has 2 divisors, whose sum is σ = 43203113282. Its totient is φ = 43203113280.

The previous prime is 43203113269. The next prime is 43203113287. The reversal of 43203113281 is 18231130234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40434775056 + 2768338225 = 201084^2 + 52615^2 .

It is a cyclic number.

It is not a de Polignac number, because 43203113281 - 2¹¹ = 43203111233 is a prime.

It is a super-2 number, since 2×43203113281² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43203113287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21601556640 + 21601556641.

It is an arithmetic number, because the mean of its divisors is an integer number (21601556641).

Almost surely, 2^43203113281 is an apocalyptic number.

It is an amenable number.

43203113281 is a deficient number, since it is larger than the sum of its proper divisors (1).

43203113281 is an equidigital number, since it uses as much as digits as its factorization.

43203113281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 43203113281 in words is "forty-three billion, two hundred three million, one hundred thirteen thousand, two hundred eighty-one".