13506231 has 8 divisors (see below), whose sum is σ = 18146304. Its totient is φ = 8935160.

The previous prime is 13506217. The next prime is 13506277. The reversal of 13506231 is 13260531.

13506231 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13506231 - 2⁹ = 13505719 is a prime.

It is a super-2 number, since 2×13506231² = 364836551650722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13506198 and 13506207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13506331) 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, 16791 + ... + 17576.

It is an arithmetic number, because the mean of its divisors is an integer number (2268288).

Almost surely, 2^13506231 is an apocalyptic number.

13506231 is a deficient number, since it is larger than the sum of its proper divisors (4640073).

13506231 is a wasteful number, since it uses less digits than its factorization.

13506231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34501.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 13506231 is about 3675.0824480547. The cubic root of 13506231 is about 238.1467858492.

Adding to 13506231 its reverse (13260531), we get a palindrome (26766762).

The spelling of 13506231 in words is "thirteen million, five hundred six thousand, two hundred thirty-one".