11238831 has 20 divisors (see below), whose sum is σ = 16988400. Its totient is φ = 7403616.

The previous prime is 11238817. The next prime is 11238841. The reversal of 11238831 is 13883211.

It is not a de Polignac number, because 11238831 - 2⁶ = 11238767 is a prime.

It is a super-2 number, since 2×11238831² = 252622644493122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 11238795 and 11238804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11238811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6430 + ... + 7988.

It is an arithmetic number, because the mean of its divisors is an integer number (849420).

Almost surely, 2^11238831 is an apocalyptic number.

11238831 is a deficient number, since it is larger than the sum of its proper divisors (5749569).

11238831 is an equidigital number, since it uses as much as digits as its factorization.

11238831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660 (or 1651 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 11238831 is about 3352.4365765813. The cubic root of 11238831 is about 223.9960604643.

The spelling of 11238831 in words is "eleven million, two hundred thirty-eight thousand, eight hundred thirty-one".