13726131 has 4 divisors (see below), whose sum is σ = 18301512. Its totient is φ = 9150752.

The previous prime is 13726129. The next prime is 13726133. The reversal of 13726131 is 13162731.

13726131 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (13726129) and next prime (13726133).

It is a cyclic number.

It is not a de Polignac number, because 13726131 - 2¹ = 13726129 is a prime.

It is a super-2 number, since 2×13726131² = 376813344458322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13726133) 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, 2287686 + ... + 2287691.

It is an arithmetic number, because the mean of its divisors is an integer number (4575378).

Almost surely, 2^13726131 is an apocalyptic number.

13726131 is a deficient number, since it is larger than the sum of its proper divisors (4575381).

13726131 is an equidigital number, since it uses as much as digits as its factorization.

13726131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4575380.

The product of its digits is 756, while the sum is 24.

The square root of 13726131 is about 3704.8793502623. The cubic root of 13726131 is about 239.4322866208.

Adding to 13726131 its reverse (13162731), we get a palindrome (26888862).

It can be divided in two parts, 1372 and 6131, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 13726131 in words is "thirteen million, seven hundred twenty-six thousand, one hundred thirty-one".