13670231 has 4 divisors (see below), whose sum is σ = 13677912. Its totient is φ = 13662552.

The previous prime is 13670221. The next prime is 13670297. The reversal of 13670231 is 13207631.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13670231 is a prime.

It is a super-2 number, since 2×13670231² = 373750431186722, 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 = 13670197 and 13670206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13670221) 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 3 ways as a sum of consecutive naturals, for example, 365 + ... + 5241.

It is an arithmetic number, because the mean of its divisors is an integer number (3419478).

Almost surely, 2^13670231 is an apocalyptic number.

13670231 is a deficient number, since it is larger than the sum of its proper divisors (7681).

13670231 is an equidigital number, since it uses as much as digits as its factorization.

13670231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7680.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 13670231 is about 3697.3275483787. The cubic root of 13670231 is about 239.1068131306.

Adding to 13670231 its reverse (13207631), we get a palindrome (26877862).

The spelling of 13670231 in words is "thirteen million, six hundred seventy thousand, two hundred thirty-one".