30231021210 has 128 divisors (see below), whose sum is σ = 79634016000. Its totient is φ = 7299336192.

The previous prime is 30231021169. The next prime is 30231021217. The reversal of 30231021210 is 1212013203.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 30231021210.

It is not an unprimeable number, because it can be changed into a prime (30231021217) 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 63 ways as a sum of consecutive naturals, for example, 13091536 + ... + 13093844.

It is an arithmetic number, because the mean of its divisors is an integer number (622140750).

Almost surely, 2^30231021210 is an apocalyptic number.

30231021210 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 30231021210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39817008000).

30231021210 is an abundant number, since it is smaller than the sum of its proper divisors (49402994790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30231021210 is a wasteful number, since it uses less digits than its factorization.

30231021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2960.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 30231021210 its reverse (1212013203), we get a palindrome (31443034413).

The spelling of 30231021210 in words is "thirty billion, two hundred thirty-one million, twenty-one thousand, two hundred ten".