1103381 has 4 divisors (see below), whose sum is σ = 1109292. Its totient is φ = 1097472.

The previous prime is 1103371. The next prime is 1103437. The reversal of 1103381 is 1833011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1833011 = 233 ⋅7867.

It can be written as a sum of positive squares in 2 ways, for example, as 448900 + 654481 = 670^2 + 809^2 .

It is a cyclic number.

It is not a de Polignac number, because 1103381 - 2¹⁸ = 841237 is a prime.

It is a super-2 number, since 2×1103381² = 2434899262322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2666 + ... + 3051.

It is an arithmetic number, because the mean of its divisors is an integer number (277323).

2^1103381 is an apocalyptic number.

It is an amenable number.

1103381 is a deficient number, since it is larger than the sum of its proper divisors (5911).

1103381 is an equidigital number, since it uses as much as digits as its factorization.

1103381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5910.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1103381 is about 1050.4194400334. The cubic root of 1103381 is about 103.3336651625. Note that the first 3 decimals are identical.

Adding to 1103381 its reverse (1833011), we get a palindrome (2936392).

The spelling of 1103381 in words is "one million, one hundred three thousand, three hundred eighty-one".