1103161 has 4 divisors (see below), whose sum is σ = 1105524. Its totient is φ = 1100800.

The previous prime is 1103143. The next prime is 1103171. The reversal of 1103161 is 1613011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 913936 + 189225 = 956^2 + 435^2 .

It is a cyclic number.

It is not a de Polignac number, because 1103161 - 2⁵ = 1103129 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103101) 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, 220 + ... + 1501.

It is an arithmetic number, because the mean of its divisors is an integer number (276381).

2^1103161 is an apocalyptic number.

It is an amenable number.

1103161 is a deficient number, since it is larger than the sum of its proper divisors (2363).

1103161 is an equidigital number, since it uses as much as digits as its factorization.

1103161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2362.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1103161 is about 1050.3147147403. The cubic root of 1103161 is about 103.3267969042.

Adding to 1103161 its reverse (1613011), we get a palindrome (2716172).

The spelling of 1103161 in words is "one million, one hundred three thousand, one hundred sixty-one".