30232000021 has 16 divisors (see below), whose sum is σ = 31310323200. Its totient is φ = 29174730880.

The previous prime is 30231999983. The next prime is 30232000037. The reversal of 30232000021 is 12000023203.

It is a happy number.

It is not a de Polignac number, because 30232000021 - 2⁹ = 30231999509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30231999965 and 30232000010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30232007021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 943656 + ... + 975166.

It is an arithmetic number, because the mean of its divisors is an integer number (1956895200).

Almost surely, 2^30232000021 is an apocalyptic number.

It is an amenable number.

30232000021 is a deficient number, since it is larger than the sum of its proper divisors (1078323179).

30232000021 is a wasteful number, since it uses less digits than its factorization.

30232000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31844.

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 30232000021 its reverse (12000023203), we get a palindrome (42232023224).

The spelling of 30232000021 in words is "thirty billion, two hundred thirty-two million, twenty-one", and thus it is an aban number.