30231202123 has 2 divisors, whose sum is σ = 30231202124. Its totient is φ = 30231202122.

The previous prime is 30231202121. The next prime is 30231202189. The reversal of 30231202123 is 32120213203.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30231202123 - 2¹ = 30231202121 is a prime.

Together with 30231202121, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 30231202123.

It is not a weakly prime, because it can be changed into another prime (30231202121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15115601061 + 15115601062.

It is an arithmetic number, because the mean of its divisors is an integer number (15115601062).

Almost surely, 2^30231202123 is an apocalyptic number.

30231202123 is a deficient number, since it is larger than the sum of its proper divisors (1).

30231202123 is an equidigital number, since it uses as much as digits as its factorization.

30231202123 is an evil number, because the sum of its binary digits is even.

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

Adding to 30231202123 its reverse (32120213203), we get a palindrome (62351415326).

The spelling of 30231202123 in words is "thirty billion, two hundred thirty-one million, two hundred two thousand, one hundred twenty-three".