5203231821 has 12 divisors (see below), whose sum is σ = 7516654080. Its totient is φ = 3468417480.

The previous prime is 5203231807. The next prime is 5203231843. The reversal of 5203231821 is 1281323025.

5203231821 is a `hidden beast` number, since 520 + 32 + 31 + 82 + 1 = 666.

It is not a de Polignac number, because 5203231821 - 2¹⁸ = 5202969677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5203231421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62410 + ... + 119588.

It is an arithmetic number, because the mean of its divisors is an integer number (626387840).

Almost surely, 2^5203231821 is an apocalyptic number.

It is an amenable number.

5203231821 is a deficient number, since it is larger than the sum of its proper divisors (2313422259).

5203231821 is a wasteful number, since it uses less digits than its factorization.

5203231821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67296 (or 67293 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 5203231821 is about 72133.4306753810. The cubic root of 5203231821 is about 1732.8370504201.

Adding to 5203231821 its reverse (1281323025), we get a palindrome (6484554846).

The spelling of 5203231821 in words is "five billion, two hundred three million, two hundred thirty-one thousand, eight hundred twenty-one".