543638431 has 16 divisors (see below), whose sum is σ = 660130560. Its totient is φ = 437313600.

The previous prime is 543638377. The next prime is 543638453. The reversal of 543638431 is 134836345.

543638431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 543638431 - 2¹¹ = 543636383 is a prime.

It is a super-2 number, since 2×543638431² = 591085487320283522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (543638471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4870 + ... + 33331.

It is an arithmetic number, because the mean of its divisors is an integer number (41258160).

Almost surely, 2^543638431 is an apocalyptic number.

543638431 is a deficient number, since it is larger than the sum of its proper divisors (116492129).

543638431 is a wasteful number, since it uses less digits than its factorization.

543638431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38334.

The product of its digits is 103680, while the sum is 37.

The square root of 543638431 is about 23316.0552195263. The cubic root of 543638431 is about 816.1501224622.

The spelling of 543638431 in words is "five hundred forty-three million, six hundred thirty-eight thousand, four hundred thirty-one".