1103913 has 12 divisors (see below), whose sum is σ = 1606020. Its totient is φ = 730656.

The previous prime is 1103911. The next prime is 1103923. The reversal of 1103913 is 3193011.

It can be written as a sum of positive squares in 2 ways, for example, as 589824 + 514089 = 768^2 + 717^2 .

It is not a de Polignac number, because 1103913 - 2¹ = 1103911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1103911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1203 + ... + 1911.

It is an arithmetic number, because the mean of its divisors is an integer number (133835).

2^1103913 is an apocalyptic number.

It is an amenable number.

1103913 is a deficient number, since it is larger than the sum of its proper divisors (502107).

1103913 is a wasteful number, since it uses less digits than its factorization.

1103913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888 (or 885 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 18.

The square root of 1103913 is about 1050.6726416920. The cubic root of 1103913 is about 103.3502700878.

Adding to 1103913 its reverse (3193011), we get a palindrome (4296924).

It can be divided in two parts, 1103 and 913, that added together give a triangular number (2016 = T₆₃).

The spelling of 1103913 in words is "one million, one hundred three thousand, nine hundred thirteen".