11131018 has 4 divisors (see below), whose sum is σ = 16696530. Its totient is φ = 5565508.

The previous prime is 11130991. The next prime is 11131019. The reversal of 11131018 is 81013111.

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

It can be written as a sum of positive squares in only one way, i.e., 6365529 + 4765489 = 2523^2 + 2183^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11130992 and 11131010.

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 as a sum of consecutive naturals, namely, 2782753 + ... + 2782756.

Almost surely, 2^11131018 is an apocalyptic number.

11131018 is a deficient number, since it is larger than the sum of its proper divisors (5565512).

11131018 is an equidigital number, since it uses as much as digits as its factorization.

11131018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5565511.

The product of its (nonzero) digits is 24, while the sum is 16.

The square root of 11131018 is about 3336.3180304042. The cubic root of 11131018 is about 223.2775004610.

Adding to 11131018 its reverse (81013111), we get a palindrome (92144129).

The spelling of 11131018 in words is "eleven million, one hundred thirty-one thousand, eighteen".