11020913 has 4 divisors (see below), whose sum is σ = 11669220. Its totient is φ = 10372608.

The previous prime is 11020861. The next prime is 11020921. The reversal of 11020913 is 31902011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31902011 = 109 ⋅292679.

It can be written as a sum of positive squares in 2 ways, for example, as 9138529 + 1882384 = 3023^2 + 1372^2 .

It is a cyclic number.

It is not a de Polignac number, because 11020913 - 2¹⁰ = 11019889 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 648289 = 11020913 / (1 + 1 + 0 + 2 + 0 + 9 + 1 + 3).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11020891 and 11020900.

It is not an unprimeable number, because it can be changed into a prime (11020963) 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, 324128 + ... + 324161.

It is an arithmetic number, because the mean of its divisors is an integer number (2917305).

Almost surely, 2^11020913 is an apocalyptic number.

It is an amenable number.

11020913 is a deficient number, since it is larger than the sum of its proper divisors (648307).

11020913 is an equidigital number, since it uses as much as digits as its factorization.

11020913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648306.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 11020913 is about 3319.7760466634. The cubic root of 11020913 is about 222.5388595176.

Adding to 11020913 its reverse (31902011), we get a palindrome (42922924).

The spelling of 11020913 in words is "eleven million, twenty thousand, nine hundred thirteen".