30032313021 has 12 divisors (see below), whose sum is σ = 44779363200. Its totient is φ = 19375685640.

The previous prime is 30032312909. The next prime is 30032313109. The reversal of 30032313021 is 12031323003.

30032313021 is a `hidden beast` number, since 300 + 32 + 31 + 302 + 1 = 666.

It is not a de Polignac number, because 30032313021 - 2¹⁰ = 30032311997 is a prime.

It is a super-2 number, since 2×30032313021² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30032312985 and 30032313003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30032313221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53821071 + ... + 53821628.

It is an arithmetic number, because the mean of its divisors is an integer number (3731613600).

Almost surely, 2^30032313021 is an apocalyptic number.

30032313021 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

30032313021 is a deficient number, since it is larger than the sum of its proper divisors (14747050179).

30032313021 is a wasteful number, since it uses less digits than its factorization.

30032313021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107642736 (or 107642733 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 30032313021 its reverse (12031323003), we get a palindrome (42063636024).

The spelling of 30032313021 in words is "thirty billion, thirty-two million, three hundred thirteen thousand, twenty-one".