30305140123 has 2 divisors, whose sum is σ = 30305140124. Its totient is φ = 30305140122.

The previous prime is 30305140121. The next prime is 30305140139. The reversal of 30305140123 is 32104150303.

It is a weak prime.

It is an emirp because it is prime and its reverse (32104150303) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30305140123 - 2¹ = 30305140121 is a prime.

Together with 30305140121, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 30305140094 and 30305140103.

It is not a weakly prime, because it can be changed into another prime (30305140121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15152570061 + 15152570062.

It is an arithmetic number, because the mean of its divisors is an integer number (15152570062).

Almost surely, 2^30305140123 is an apocalyptic number.

30305140123 is a deficient number, since it is larger than the sum of its proper divisors (1).

30305140123 is an equidigital number, since it uses as much as digits as its factorization.

30305140123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 30305140123 its reverse (32104150303), we get a palindrome (62409290426).

The spelling of 30305140123 in words is "thirty billion, three hundred five million, one hundred forty thousand, one hundred twenty-three".