30120013523 has 2 divisors, whose sum is σ = 30120013524. Its totient is φ = 30120013522.

The previous prime is 30120013513. The next prime is 30120013529. The reversal of 30120013523 is 32531002103.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30120013523 - 2⁶ = 30120013459 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30120013495 and 30120013504.

It is not a weakly prime, because it can be changed into another prime (30120013529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15060006761 + 15060006762.

It is an arithmetic number, because the mean of its divisors is an integer number (15060006762).

Almost surely, 2^30120013523 is an apocalyptic number.

30120013523 is a deficient number, since it is larger than the sum of its proper divisors (1).

30120013523 is an equidigital number, since it uses as much as digits as its factorization.

30120013523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 20.

Adding to 30120013523 its reverse (32531002103), we get a palindrome (62651015626).

The spelling of 30120013523 in words is "thirty billion, one hundred twenty million, thirteen thousand, five hundred twenty-three".