11130731 has 4 divisors (see below), whose sum is σ = 11313264. Its totient is φ = 10948200.

The previous prime is 11130727. The next prime is 11130737. The reversal of 11130731 is 13703111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13703111 = 43 ⋅318677.

It is a cyclic number.

It is not a de Polignac number, because 11130731 - 2² = 11130727 is a prime.

It is a super-2 number, since 2×11130731² = 247786345188722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11130737) 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, 91175 + ... + 91296.

It is an arithmetic number, because the mean of its divisors is an integer number (2828316).

Almost surely, 2^11130731 is an apocalyptic number.

11130731 is a deficient number, since it is larger than the sum of its proper divisors (182533).

11130731 is an equidigital number, since it uses as much as digits as its factorization.

11130731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182532.

The product of its (nonzero) digits is 63, while the sum is 17.

The square root of 11130731 is about 3336.2750186398. The cubic root of 11130731 is about 223.2755814633.

Adding to 11130731 its reverse (13703111), we get a palindrome (24833842).

The spelling of 11130731 in words is "eleven million, one hundred thirty thousand, seven hundred thirty-one".