11111013 has 20 divisors (see below), whose sum is σ = 17576460. Its totient is φ = 6970752.

The previous prime is 11110999. The next prime is 11111039. The reversal of 11111013 is 31011111.

It can be written as a sum of positive squares in 2 ways, for example, as 3175524 + 7935489 = 1782^2 + 2817^2 .

It is not a de Polignac number, because 11111013 - 2⁹ = 11110501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11110986 and 11111004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2658 + ... + 5411.

It is an arithmetic number, because the mean of its divisors is an integer number (878823).

Almost surely, 2^11111013 is an apocalyptic number.

It is an amenable number.

11111013 is a deficient number, since it is larger than the sum of its proper divisors (6465447).

11111013 is an equidigital number, since it uses as much as digits as its factorization.

11111013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8098 (or 8089 counting only the distinct ones).

The product of its (nonzero) digits is 3, while the sum is 9.

The square root of 11111013 is about 3333.3186166342. The cubic root of 11111013 is about 223.1436599040.

Adding to 11111013 its reverse (31011111), we get a palindrome (42122124).

The spelling of 11111013 in words is "eleven million, one hundred eleven thousand, thirteen".