13231838 has 4 divisors (see below), whose sum is σ = 19847760. Its totient is φ = 6615918.

The previous prime is 13231819. The next prime is 13231843. The reversal of 13231838 is 83813231.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 13231838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3307958 + ... + 3307961.

It is an arithmetic number, because the mean of its divisors is an integer number (4961940).

Almost surely, 2^13231838 is an apocalyptic number.

13231838 is a deficient number, since it is larger than the sum of its proper divisors (6615922).

13231838 is an equidigital number, since it uses as much as digits as its factorization.

13231838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6615921.

The product of its digits is 3456, while the sum is 29.

The square root of 13231838 is about 3637.5593465949. The cubic root of 13231838 is about 236.5230069977.

The spelling of 13231838 in words is "thirteen million, two hundred thirty-one thousand, eight hundred thirty-eight".