13631427 has 6 divisors (see below), whose sum is σ = 19689852. Its totient is φ = 9087612.

The previous prime is 13631411. The next prime is 13631459. The reversal of 13631427 is 72413631.

13631427 is a `hidden beast` number, since 1 + 3 + 631 + 4 + 27 = 666.

It is not a de Polignac number, because 13631427 - 2⁴ = 13631411 is a prime.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 13631427.

It is not an unprimeable number, because it can be changed into a prime (13631477) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 757293 + ... + 757310.

It is an arithmetic number, because the mean of its divisors is an integer number (3281642).

Almost surely, 2^13631427 is an apocalyptic number.

13631427 is a deficient number, since it is larger than the sum of its proper divisors (6058425).

13631427 is a wasteful number, since it uses less digits than its factorization.

13631427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514609 (or 1514606 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 13631427 is about 3692.0762451499. The cubic root of 13631427 is about 238.8803577107.

The spelling of 13631427 in words is "thirteen million, six hundred thirty-one thousand, four hundred twenty-seven".