100043431112281 has 2 divisors, whose sum is σ = 100043431112282. Its totient is φ = 100043431112280.

The previous prime is 100043431112189. The next prime is 100043431112311. The reversal of 100043431112281 is 182211134340001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93376293985881 + 6667137126400 = 9663141^2 + 2582080^2 .

It is a cyclic number.

It is not a de Polignac number, because 100043431112281 - 2²⁹ = 100042894241369 is a prime.

It is a super-2 number, since 2×100043431112281² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100043431182281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50021715556140 + 50021715556141.

It is an arithmetic number, because the mean of its divisors is an integer number (50021715556141).

Almost surely, 2^{100043431112281} is an apocalyptic number.

It is an amenable number.

100043431112281 is a deficient number, since it is larger than the sum of its proper divisors (1).

100043431112281 is an equidigital number, since it uses as much as digits as its factorization.

100043431112281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 31.

Adding to 100043431112281 its reverse (182211134340001), we get a palindrome (282254565452282).

The spelling of 100043431112281 in words is "one hundred trillion, forty-three billion, four hundred thirty-one million, one hundred twelve thousand, two hundred eighty-one".