13724131 has 2 divisors, whose sum is σ = 13724132. Its totient is φ = 13724130.

The previous prime is 13724107. The next prime is 13724143. The reversal of 13724131 is 13142731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13724131 - 2¹¹ = 13722083 is a prime.

It is a super-2 number, since 2×13724131² = 376703543410322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13724171) 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 as a sum of consecutive naturals, namely, 6862065 + 6862066.

It is an arithmetic number, because the mean of its divisors is an integer number (6862066).

Almost surely, 2^13724131 is an apocalyptic number.

13724131 is a deficient number, since it is larger than the sum of its proper divisors (1).

13724131 is an equidigital number, since it uses as much as digits as its factorization.

13724131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 22.

The square root of 13724131 is about 3704.6094261069. The cubic root of 13724131 is about 239.4206570306.

Adding to 13724131 its reverse (13142731), we get a palindrome (26866862).

The spelling of 13724131 in words is "thirteen million, seven hundred twenty-four thousand, one hundred thirty-one".