13127431 has 2 divisors, whose sum is σ = 13127432. Its totient is φ = 13127430.

The previous prime is 13127407. The next prime is 13127437. The reversal of 13127431 is 13472131.

13127431 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13127431 - 2¹¹ = 13125383 is a prime.

It is a super-2 number, since 2×13127431² = 344658889319522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13127437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6563715 + 6563716.

It is an arithmetic number, because the mean of its divisors is an integer number (6563716).

Almost surely, 2^13127431 is an apocalyptic number.

13127431 is the 2292-nd centered pentagonal number.

13127431 is a deficient number, since it is larger than the sum of its proper divisors (1).

13127431 is an equidigital number, since it uses as much as digits as its factorization.

13127431 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 13127431 is about 3623.1796808880. The cubic root of 13127431 is about 235.8992615632.

Adding to 13127431 its reverse (13472131), we get a palindrome (26599562).

The spelling of 13127431 in words is "thirteen million, one hundred twenty-seven thousand, four hundred thirty-one".