30231214021 has 4 divisors (see below), whose sum is σ = 30297365932. Its totient is φ = 30165062112.

The previous prime is 30231214001. The next prime is 30231214033. The reversal of 30231214021 is 12041213203.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16427548900 + 13803665121 = 128170^2 + 117489^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30231214021 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 30231214021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231214001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33075270 + ... + 33076183.

It is an arithmetic number, because the mean of its divisors is an integer number (7574341483).

Almost surely, 2^30231214021 is an apocalyptic number.

It is an amenable number.

30231214021 is a deficient number, since it is larger than the sum of its proper divisors (66151911).

30231214021 is an equidigital number, since it uses as much as digits as its factorization.

30231214021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66151910.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 30231214021 its reverse (12041213203), we get a palindrome (42272427224).

The spelling of 30231214021 in words is "thirty billion, two hundred thirty-one million, two hundred fourteen thousand, twenty-one".