11421231 has 8 divisors (see below), whose sum is σ = 15292464. Its totient is φ = 7582080.

The previous prime is 11421211. The next prime is 11421233. The reversal of 11421231 is 13212411.

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

It is not a de Polignac number, because 11421231 - 2⁵ = 11421199 is a prime.

It is a super-2 number, since 2×11421231² = 260889035110722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11421231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7176 + ... + 8621.

It is an arithmetic number, because the mean of its divisors is an integer number (1911558).

Almost surely, 2^11421231 is an apocalyptic number.

11421231 is a deficient number, since it is larger than the sum of its proper divisors (3871233).

11421231 is a wasteful number, since it uses less digits than its factorization.

11421231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16041.

The product of its digits is 48, while the sum is 15.

The square root of 11421231 is about 3379.5311805042. The cubic root of 11421231 is about 225.2013407646.

Adding to 11421231 its reverse (13212411), we get a palindrome (24633642).

The spelling of 11421231 in words is "eleven million, four hundred twenty-one thousand, two hundred thirty-one".