13527431 has 2 divisors, whose sum is σ = 13527432. Its totient is φ = 13527430.

The previous prime is 13527419. The next prime is 13527433. The reversal of 13527431 is 13472531.

It is a strong prime.

It is an emirp because it is prime and its reverse (13472531) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13527431 is a prime.

It is a super-2 number, since 2×13527431² = 365982778919522, which contains 22 as substring.

Together with 13527433, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13527431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13527433) 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, 6763715 + 6763716.

It is an arithmetic number, because the mean of its divisors is an integer number (6763716).

Almost surely, 2^13527431 is an apocalyptic number.

13527431 is a deficient number, since it is larger than the sum of its proper divisors (1).

13527431 is an equidigital number, since it uses as much as digits as its factorization.

13527431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 26.

The square root of 13527431 is about 3677.9656061470. The cubic root of 13527431 is about 238.2713227537.

Adding to 13527431 its reverse (13472531), we get a palindrome (26999962).

The spelling of 13527431 in words is "thirteen million, five hundred twenty-seven thousand, four hundred thirty-one".