30301321020 has 144 divisors (see below), whose sum is σ = 88929566880. Its totient is φ = 7708428288.

The previous prime is 30301321013. The next prime is 30301321081. The reversal of 30301321020 is 2012310303.

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

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 14504136 + ... + 14506224.

Almost surely, 2^30301321020 is an apocalyptic number.

30301321020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30301321020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44464783440).

30301321020 is an abundant number, since it is smaller than the sum of its proper divisors (58628245860).

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

30301321020 is a wasteful number, since it uses less digits than its factorization.

30301321020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2604 (or 2579 counting only the distinct ones).

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

Adding to 30301321020 its reverse (2012310303), we get a palindrome (32313631323).

The spelling of 30301321020 in words is "thirty billion, three hundred one million, three hundred twenty-one thousand, twenty".