13438831 has 8 divisors (see below), whose sum is σ = 16026624. Its totient is φ = 11018040.

The previous prime is 13438811. The next prime is 13438853. The reversal of 13438831 is 13883431.

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

It is a cyclic number.

It is not a de Polignac number, because 13438831 - 2⁹ = 13438319 is a prime.

It is a super-2 number, since 2×13438831² = 361204357293122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13438793 and 13438802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13438811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41575 + ... + 41896.

It is an arithmetic number, because the mean of its divisors is an integer number (2003328).

Almost surely, 2^13438831 is an apocalyptic number.

13438831 is a deficient number, since it is larger than the sum of its proper divisors (2587793).

13438831 is an equidigital number, since it uses as much as digits as its factorization.

13438831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83501.

The product of its digits is 6912, while the sum is 31.

The square root of 13438831 is about 3665.9011170516. The cubic root of 13438831 is about 237.7499846123.

The spelling of 13438831 in words is "thirteen million, four hundred thirty-eight thousand, eight hundred thirty-one".