30310210021 has 16 divisors (see below), whose sum is σ = 37322569984. Its totient is φ = 23970328704.

The previous prime is 30310210001. The next prime is 30310210039. The reversal of 30310210021 is 12001201303.

It is not a de Polignac number, because 30310210021 - 2¹³ = 30310201829 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 30310209983 and 30310210010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30310210001) 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 15 ways as a sum of consecutive naturals, for example, 116536 + ... + 272398.

It is an arithmetic number, because the mean of its divisors is an integer number (2332660624).

Almost surely, 2^30310210021 is an apocalyptic number.

It is an amenable number.

30310210021 is a deficient number, since it is larger than the sum of its proper divisors (7012359963).

30310210021 is a wasteful number, since it uses less digits than its factorization.

30310210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158020.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 30310210021 its reverse (12001201303), we get a palindrome (42311411324).

The spelling of 30310210021 in words is "thirty billion, three hundred ten million, two hundred ten thousand, twenty-one".