30230423021 has 2 divisors, whose sum is σ = 30230423022. Its totient is φ = 30230423020.

The previous prime is 30230422987. The next prime is 30230423033. The reversal of 30230423021 is 12032403203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21372978025 + 8857444996 = 146195^2 + 94114^2 .

It is an emirp because it is prime and its reverse (12032403203) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30230423021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30230422984 and 30230423002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30230423051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15115211510 + 15115211511.

It is an arithmetic number, because the mean of its divisors is an integer number (15115211511).

Almost surely, 2^30230423021 is an apocalyptic number.

It is an amenable number.

30230423021 is a deficient number, since it is larger than the sum of its proper divisors (1).

30230423021 is an equidigital number, since it uses as much as digits as its factorization.

30230423021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 30230423021 its reverse (12032403203), we get a palindrome (42262826224).

The spelling of 30230423021 in words is "thirty billion, two hundred thirty million, four hundred twenty-three thousand, twenty-one".