13436231 has 4 divisors (see below), whose sum is σ = 13450272. Its totient is φ = 13422192.

The previous prime is 13436221. The next prime is 13436263. The reversal of 13436231 is 13263431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13263431 = 461 ⋅28771.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13436231 is a prime.

It is a super-2 number, since 2×13436231² = 361064606970722, 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 = 13436197 and 13436206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13436221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5471 + ... + 7536.

It is an arithmetic number, because the mean of its divisors is an integer number (3362568).

Almost surely, 2^13436231 is an apocalyptic number.

13436231 is a deficient number, since it is larger than the sum of its proper divisors (14041).

13436231 is a wasteful number, since it uses less digits than its factorization.

13436231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14040.

The product of its digits is 1296, while the sum is 23.

The square root of 13436231 is about 3665.5464804037. The cubic root of 13436231 is about 237.7346511896.

Adding to 13436231 its reverse (13263431), we get a palindrome (26699662).

The spelling of 13436231 in words is "thirteen million, four hundred thirty-six thousand, two hundred thirty-one".