5231385639 has 12 divisors (see below), whose sum is σ = 8000942976. Its totient is φ = 3282437952.

The previous prime is 5231385631. The next prime is 5231385659. The reversal of 5231385639 is 9365831325.

It is a happy number.

5231385639 is a `hidden beast` number, since 5 + 2 + 3 + 1 + 3 + 8 + 5 + 639 = 666.

It is not a de Polignac number, because 5231385639 - 2³ = 5231385631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5231385594 and 5231385603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5231385631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17095879 + ... + 17096184.

It is an arithmetic number, because the mean of its divisors is an integer number (666745248).

Almost surely, 2^5231385639 is an apocalyptic number.

5231385639 is a deficient number, since it is larger than the sum of its proper divisors (2769557337).

5231385639 is a wasteful number, since it uses less digits than its factorization.

5231385639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34192086 (or 34192083 counting only the distinct ones).

The product of its digits is 583200, while the sum is 45.

The square root of 5231385639 is about 72328.3183753086. The cubic root of 5231385639 is about 1735.9567942794.

The spelling of 5231385639 in words is "five billion, two hundred thirty-one million, three hundred eighty-five thousand, six hundred thirty-nine".