30031221300 has 72 divisors (see below), whose sum is σ = 87236728992. Its totient is φ = 7976400000.

The previous prime is 30031221247. The next prime is 30031221307. The reversal of 30031221300 is 312213003.

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 30031221300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30031221307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124111 + ... + 274710.

It is an arithmetic number, because the mean of its divisors is an integer number (1211621236).

Almost surely, 2^30031221300 is an apocalyptic number.

30031221300 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30031221300 is an abundant number, since it is smaller than the sum of its proper divisors (57205507692).

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

30031221300 is a wasteful number, since it uses less digits than its factorization.

30031221300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399089 (or 399082 counting only the distinct ones).

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

Adding to 30031221300 its reverse (312213003), we get a palindrome (30343434303).

The spelling of 30031221300 in words is "thirty billion, thirty-one million, two hundred twenty-one thousand, three hundred".