30203230021 has 8 divisors (see below), whose sum is σ = 30840464664. Its totient is φ = 29572035840.

The previous prime is 30203230009. The next prime is 30203230063. The reversal of 30203230021 is 12003230203.

It can be written as a sum of positive squares in 4 ways, for example, as 3139360900 + 27063869121 = 56030^2 + 164511^2 .

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 30203230021 - 2⁷ = 30203229893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30203229977 and 30203230004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30203230121) 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, 1500010 + ... + 1520011.

It is an arithmetic number, because the mean of its divisors is an integer number (3855058083).

Almost surely, 2^30203230021 is an apocalyptic number.

It is an amenable number.

30203230021 is a deficient number, since it is larger than the sum of its proper divisors (637234643).

30203230021 is a wasteful number, since it uses less digits than its factorization.

30203230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020231.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 30203230021 its reverse (12003230203), we get a palindrome (42206460224).

The spelling of 30203230021 in words is "thirty billion, two hundred three million, two hundred thirty thousand, twenty-one".