11208131 has 16 divisors (see below), whose sum is σ = 12607488. Its totient is φ = 9878400.

The previous prime is 11208101. The next prime is 11208139. The reversal of 11208131 is 13180211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11208131 is a prime.

It is a super-2 number, since 2×11208131² = 251244401026322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11208139) 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 15 ways as a sum of consecutive naturals, for example, 88190 + ... + 88316.

It is an arithmetic number, because the mean of its divisors is an integer number (787968).

Almost surely, 2^11208131 is an apocalyptic number.

11208131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11208131 is a deficient number, since it is larger than the sum of its proper divisors (1399357).

11208131 is a wasteful number, since it uses less digits than its factorization.

11208131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 11208131 is about 3347.8546862132. The cubic root of 11208131 is about 223.7919185323.

Adding to 11208131 its reverse (13180211), we get a palindrome (24388342).

The spelling of 11208131 in words is "eleven million, two hundred eight thousand, one hundred thirty-one".