5636431 has 4 divisors (see below), whose sum is σ = 5644912. Its totient is φ = 5627952.

The previous prime is 5636419. The next prime is 5636437. The reversal of 5636431 is 1346365.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5636431 - 2⁵ = 5636399 is a prime.

It is a super-2 number, since 2×5636431² = 63538708835522, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 5636431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5636437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3150 + ... + 4603.

It is an arithmetic number, because the mean of its divisors is an integer number (1411228).

Almost surely, 2^5636431 is an apocalyptic number.

5636431 is a deficient number, since it is larger than the sum of its proper divisors (8481).

5636431 is an equidigital number, since it uses as much as digits as its factorization.

5636431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8480.

The product of its digits is 6480, while the sum is 28.

The square root of 5636431 is about 2374.1168884450. The cubic root of 5636431 is about 177.9650543694.

Subtracting from 5636431 its sum of digits (28), we obtain a triangular number (5636403 = T₃₃₅₇).

The spelling of 5636431 in words is "five million, six hundred thirty-six thousand, four hundred thirty-one".