30021311000 has 128 divisors (see below), whose sum is σ = 74643379200. Its totient is φ = 11269411200.

The previous prime is 30021310987. The next prime is 30021311077. The reversal of 30021311000 is 11312003.

It is a super-2 number, since 2×30021311000² (a number of 22 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 2025617 + ... + 2040383.

It is an arithmetic number, because the mean of its divisors is an integer number (583151400).

Almost surely, 2^30021311000 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 30021311000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37321689600).

30021311000 is an abundant number, since it is smaller than the sum of its proper divisors (44622068200).

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

30021311000 is a wasteful number, since it uses less digits than its factorization.

30021311000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14914 (or 14900 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 30021311000 its reverse (11312003), we get a palindrome (30032623003).

The spelling of 30021311000 in words is "thirty billion, twenty-one million, three hundred eleven thousand".