30312003020 has 96 divisors (see below), whose sum is σ = 73176929280. Its totient is φ = 10453605120.

The previous prime is 30312003011. The next prime is 30312003049. The reversal of 30312003020 is 2030021303.

It is a junction number, because it is equal to n+sod(n) for n = 30312002986 and 30312003004.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 307529 + ... + 393951.

It is an arithmetic number, because the mean of its divisors is an integer number (762259680).

Almost surely, 2^30312003020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30312003020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36588464640).

30312003020 is an abundant number, since it is smaller than the sum of its proper divisors (42864926260).

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

30312003020 is a wasteful number, since it uses less digits than its factorization.

30312003020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86535 (or 86533 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

Adding to 30312003020 its reverse (2030021303), we get a palindrome (32342024323).

The spelling of 30312003020 in words is "thirty billion, three hundred twelve million, three thousand, twenty".