11231538 has 8 divisors (see below), whose sum is σ = 22463088. Its totient is φ = 3743844.

The previous prime is 11231537. The next prime is 11231629. The reversal of 11231538 is 83513211.

It is a sphenic number, since it is the product of 3 distinct primes.

11231538 is an admirable number.

It is a super-2 number, since 2×11231538² = 252294891690888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11231537) 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, 935956 + ... + 935967.

It is an arithmetic number, because the mean of its divisors is an integer number (2807886).

Almost surely, 2^11231538 is an apocalyptic number.

11231538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11231538 is a wasteful number, since it uses less digits than its factorization.

11231538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871928.

The product of its digits is 720, while the sum is 24.

The square root of 11231538 is about 3351.3486837391. The cubic root of 11231538 is about 223.9475988182.

Adding to 11231538 its reverse (83513211), we get a palindrome (94744749).

The spelling of 11231538 in words is "eleven million, two hundred thirty-one thousand, five hundred thirty-eight".