100043153281 has 2 divisors, whose sum is σ = 100043153282. Its totient is φ = 100043153280.

The previous prime is 100043153233. The next prime is 100043153297. The reversal of 100043153281 is 182351340001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85824975681 + 14218177600 = 292959^2 + 119240^2 .

It is a cyclic number.

It is not a de Polignac number, because 100043153281 - 2²⁵ = 100009598849 is a prime.

It is a super-2 number, since 2×100043153281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100043153201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50021576640 + 50021576641.

It is an arithmetic number, because the mean of its divisors is an integer number (50021576641).

Almost surely, 2^100043153281 is an apocalyptic number.

It is an amenable number.

100043153281 is a deficient number, since it is larger than the sum of its proper divisors (1).

100043153281 is an equidigital number, since it uses as much as digits as its factorization.

100043153281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 100043153281 its reverse (182351340001), we get a palindrome (282394493282).

The spelling of 100043153281 in words is "one hundred billion, forty-three million, one hundred fifty-three thousand, two hundred eighty-one".