13045231 has 4 divisors (see below), whose sum is σ = 13066992. Its totient is φ = 13023472.

The previous prime is 13045217. The next prime is 13045237. The reversal of 13045231 is 13254031.

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

It is a cyclic number.

It is not a de Polignac number, because 13045231 - 2⁵ = 13045199 is a prime.

It is a super-2 number, since 2×13045231² = 340356103686722, 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 = 13045199 and 13045208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13045237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9955 + ... + 11188.

It is an arithmetic number, because the mean of its divisors is an integer number (3266748).

Almost surely, 2^13045231 is an apocalyptic number.

13045231 is a deficient number, since it is larger than the sum of its proper divisors (21761).

13045231 is an equidigital number, since it uses as much as digits as its factorization.

13045231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21760.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13045231 is about 3611.8182401666. The cubic root of 13045231 is about 235.4058536745.

Adding to 13045231 its reverse (13254031), we get a palindrome (26299262).

The spelling of 13045231 in words is "thirteen million, forty-five thousand, two hundred thirty-one".