13641431 has 2 divisors, whose sum is σ = 13641432. Its totient is φ = 13641430.

The previous prime is 13641413. The next prime is 13641499. The reversal of 13641431 is 13414631.

13641431 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

Together with previous prime (13641413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (13414631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13641431 - 2⁶ = 13641367 is a prime.

It is a super-2 number, since 2×13641431² = 372177279455522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13641397 and 13641406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13641931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6820715 + 6820716.

It is an arithmetic number, because the mean of its divisors is an integer number (6820716).

Almost surely, 2^13641431 is an apocalyptic number.

13641431 is a deficient number, since it is larger than the sum of its proper divisors (1).

13641431 is an equidigital number, since it uses as much as digits as its factorization.

13641431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

The square root of 13641431 is about 3693.4307899296. The cubic root of 13641431 is about 238.9387809100.

The spelling of 13641431 in words is "thirteen million, six hundred forty-one thousand, four hundred thirty-one".