30202021231 has 2 divisors, whose sum is σ = 30202021232. Its totient is φ = 30202021230.

The previous prime is 30202021189. The next prime is 30202021237. The reversal of 30202021231 is 13212020203.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30202021231 - 2⁷ = 30202021103 is a prime.

It is a super-2 number, since 2×30202021231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30202021237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15101010615 + 15101010616.

It is an arithmetic number, because the mean of its divisors is an integer number (15101010616).

Almost surely, 2^30202021231 is an apocalyptic number.

30202021231 is a deficient number, since it is larger than the sum of its proper divisors (1).

30202021231 is an equidigital number, since it uses as much as digits as its factorization.

30202021231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 30202021231 its reverse (13212020203), we get a palindrome (43414041434).

The spelling of 30202021231 in words is "thirty billion, two hundred two million, twenty-one thousand, two hundred thirty-one".