30231232021 has 16 divisors (see below), whose sum is σ = 30714697728. Its totient is φ = 29752012800.

The previous prime is 30231231997. The next prime is 30231232067. The reversal of 30231232021 is 12023213203.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30231232021 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 30231232021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231232121) 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, 14319756 + ... + 14321866.

It is an arithmetic number, because the mean of its divisors is an integer number (1919668608).

Almost surely, 2^30231232021 is an apocalyptic number.

It is an amenable number.

30231232021 is a deficient number, since it is larger than the sum of its proper divisors (483465707).

30231232021 is a wasteful number, since it uses less digits than its factorization.

30231232021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3012.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 30231232021 its reverse (12023213203), we get a palindrome (42254445224).

The spelling of 30231232021 in words is "thirty billion, two hundred thirty-one million, two hundred thirty-two thousand, twenty-one".