30331132021 has 8 divisors (see below), whose sum is σ = 30787400384. Its totient is φ = 29874968640.

The previous prime is 30331132001. The next prime is 30331132043. The reversal of 30331132021 is 12023113303.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30331132021 - 2¹¹ = 30331129973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30331132021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30331132001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 709741 + ... + 751261.

It is an arithmetic number, because the mean of its divisors is an integer number (3848425048).

Almost surely, 2^30331132021 is an apocalyptic number.

It is an amenable number.

30331132021 is a deficient number, since it is larger than the sum of its proper divisors (456268363).

30331132021 is a wasteful number, since it uses less digits than its factorization.

30331132021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52491.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 30331132021 its reverse (12023113303), we get a palindrome (42354245324).

The spelling of 30331132021 in words is "thirty billion, three hundred thirty-one million, one hundred thirty-two thousand, twenty-one".