11131013 has 4 divisors (see below), whose sum is σ = 11145120. Its totient is φ = 11116908.

The previous prime is 11130991. The next prime is 11131019. The reversal of 11131013 is 31013111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11131013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11130985 and 11131003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11131019) 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 3 ways as a sum of consecutive naturals, for example, 5795 + ... + 7472.

It is an arithmetic number, because the mean of its divisors is an integer number (2786280).

Almost surely, 2^11131013 is an apocalyptic number.

It is an amenable number.

11131013 is a deficient number, since it is larger than the sum of its proper divisors (14107).

11131013 is an equidigital number, since it uses as much as digits as its factorization.

11131013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14106.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 11131013 is about 3336.3172810750. The cubic root of 11131013 is about 223.2774670293.

Adding to 11131013 its reverse (31013111), we get a palindrome (42144124).

It can be divided in two parts, 111 and 31013, that multiplied together give a palindrome (3442443).

The spelling of 11131013 in words is "eleven million, one hundred thirty-one thousand, thirteen".