21030310230 has 32 divisors (see below), whose sum is σ = 50496342624. Its totient is φ = 5605460736.

The previous prime is 21030310211. The next prime is 21030310237. The reversal of 21030310230 is 3201303012.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030310237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98209 + ... + 227388.

It is an arithmetic number, because the mean of its divisors is an integer number (1578010707).

Almost surely, 2^21030310230 is an apocalyptic number.

21030310230 is an abundant number, since it is smaller than the sum of its proper divisors (29466032394).

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

21030310230 is a wasteful number, since it uses less digits than its factorization.

21030310230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327760.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 21030310230 its reverse (3201303012), we get a palindrome (24231613242).

The spelling of 21030310230 in words is "twenty-one billion, thirty million, three hundred ten thousand, two hundred thirty".