13442231 has 8 divisors (see below), whose sum is σ = 14941584. Its totient is φ = 11989120.

The previous prime is 13442201. The next prime is 13442237. The reversal of 13442231 is 13224431.

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

It is a de Polignac number, because none of the positive numbers 2^k-13442231 is a prime.

It is a super-2 number, since 2×13442231² = 361387148514722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13442237) 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, 10946 + ... + 12111.

It is an arithmetic number, because the mean of its divisors is an integer number (1867698).

Almost surely, 2^13442231 is an apocalyptic number.

13442231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13442231 is a deficient number, since it is larger than the sum of its proper divisors (1499353).

13442231 is a wasteful number, since it uses less digits than its factorization.

13442231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23121.

The product of its digits is 576, while the sum is 20.

The square root of 13442231 is about 3666.3648209091. The cubic root of 13442231 is about 237.7700330274.

Adding to 13442231 its reverse (13224431), we get a palindrome (26666662).

It can be divided in two parts, 13 and 442231, that added together give a palindrome (442244).

The spelling of 13442231 in words is "thirteen million, four hundred forty-two thousand, two hundred thirty-one".