21030130311 has 8 divisors (see below), whose sum is σ = 28355232240. Its totient is φ = 13862557632.

The previous prime is 21030130249. The next prime is 21030130327. The reversal of 21030130311 is 11303103012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21030130311 - 2¹⁰ = 21030129287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030130351) 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 7 ways as a sum of consecutive naturals, for example, 39382000 + ... + 39382533.

It is an arithmetic number, because the mean of its divisors is an integer number (3544404030).

Almost surely, 2^21030130311 is an apocalyptic number.

21030130311 is a deficient number, since it is larger than the sum of its proper divisors (7325101929).

21030130311 is an equidigital number, since it uses as much as digits as its factorization.

21030130311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78764625.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 21030130311 its reverse (11303103012), we get a palindrome (32333233323).

The spelling of 21030130311 in words is "twenty-one billion, thirty million, one hundred thirty thousand, three hundred eleven".