21230130303 has 48 divisors (see below), whose sum is σ = 32720762880. Its totient is φ = 13243348800.

The previous prime is 21230130277. The next prime is 21230130461. The reversal of 21230130303 is 30303103212.

21230130303 is a `hidden beast` number, since 2 + 1 + 230 + 130 + 303 = 666.

It is not a de Polignac number, because 21230130303 - 2²⁸ = 20961694847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230130503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 993550 + ... + 1014692.

It is an arithmetic number, because the mean of its divisors is an integer number (681682560).

Almost surely, 2^21230130303 is an apocalyptic number.

21230130303 is a deficient number, since it is larger than the sum of its proper divisors (11490632577).

21230130303 is a wasteful number, since it uses less digits than its factorization.

21230130303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21300 (or 21297 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 21230130303 its reverse (30303103212), we get a palindrome (51533233515).

The spelling of 21230130303 in words is "twenty-one billion, two hundred thirty million, one hundred thirty thousand, three hundred three".