103443281 has 2 divisors, whose sum is σ = 103443282. Its totient is φ = 103443280.

The previous prime is 103443253. The next prime is 103443313. The reversal of 103443281 is 182344301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73017025 + 30426256 = 8545^2 + 5516^2 .

It is a cyclic number.

It is not a de Polignac number, because 103443281 - 2²² = 99248977 is a prime.

It is a super-2 number, since 2×103443281² = 21401024768089922, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 103443281.

It is not a weakly prime, because it can be changed into another prime (103443211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51721640 + 51721641.

It is an arithmetic number, because the mean of its divisors is an integer number (51721641).

Almost surely, 2^103443281 is an apocalyptic number.

It is an amenable number.

103443281 is a deficient number, since it is larger than the sum of its proper divisors (1).

103443281 is an equidigital number, since it uses as much as digits as its factorization.

103443281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 103443281 is about 10170.7070059067. The cubic root of 103443281 is about 469.4263122574.

Adding to 103443281 its reverse (182344301), we get a palindrome (285787582).

The spelling of 103443281 in words is "one hundred three million, four hundred forty-three thousand, two hundred eighty-one".