1103281 has 2 divisors, whose sum is σ = 1103282. Its totient is φ = 1103280.

The previous prime is 1103279. The next prime is 1103293. The reversal of 1103281 is 1823011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1083681 + 19600 = 1041^2 + 140^2 .

It is an emirp because it is prime and its reverse (1823011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1103281 - 2¹ = 1103279 is a prime.

It is a super-2 number, since 2×1103281² = 2434457929922, which contains 22 as substring.

Together with 1103279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1103581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551640 + 551641.

It is an arithmetic number, because the mean of its divisors is an integer number (551641).

2^1103281 is an apocalyptic number.

It is an amenable number.

1103281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1103281 is an equidigital number, since it uses as much as digits as its factorization.

1103281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1103281 is about 1050.3718389218. The cubic root of 1103281 is about 103.3305433401.

Adding to 1103281 its reverse (1823011), we get a palindrome (2926292).

The spelling of 1103281 in words is "one million, one hundred three thousand, two hundred eighty-one".