11231439 has 8 divisors (see below), whose sum is σ = 15491760. Its totient is φ = 7229376.

The previous prime is 11231431. The next prime is 11231443. The reversal of 11231439 is 93413211.

11231439 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11231439 - 2³ = 11231431 is a prime.

It is a super-2 number, since 2×11231439² = 252290444021442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231431) 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, 64462 + ... + 64635.

It is an arithmetic number, because the mean of its divisors is an integer number (1936470).

Almost surely, 2^11231439 is an apocalyptic number.

11231439 is a deficient number, since it is larger than the sum of its proper divisors (4260321).

11231439 is a wasteful number, since it uses less digits than its factorization.

11231439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129129.

The product of its digits is 648, while the sum is 24.

The square root of 11231439 is about 3351.3339135335. Note that the first 3 decimals coincide. The cubic root of 11231439 is about 223.9469408235.

The spelling of 11231439 in words is "eleven million, two hundred thirty-one thousand, four hundred thirty-nine".