521134030203 has 32 divisors (see below), whose sum is σ = 739009611072. Its totient is φ = 326217715200.

The previous prime is 521134030189. The next prime is 521134030211. The reversal of 521134030203 is 302030431125.

It is not a de Polignac number, because 521134030203 - 2⁵ = 521134030171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (521134030273) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 367228 + ... + 1084953.

It is an arithmetic number, because the mean of its divisors is an integer number (23094050346).

Almost surely, 2^521134030203 is an apocalyptic number.

521134030203 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

521134030203 is a deficient number, since it is larger than the sum of its proper divisors (217875580869).

521134030203 is a wasteful number, since it uses less digits than its factorization.

521134030203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452335.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 521134030203 its reverse (302030431125), we get a palindrome (823164461328).

The spelling of 521134030203 in words is "five hundred twenty-one billion, one hundred thirty-four million, thirty thousand, two hundred three".