30120023 has 2 divisors, whose sum is σ = 30120024. Its totient is φ = 30120022.

The previous prime is 30120017. The next prime is 30120047. The reversal of 30120023 is 32002103.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30120023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30119986 and 30120013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30120323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15060011 + 15060012.

It is an arithmetic number, because the mean of its divisors is an integer number (15060012).

Almost surely, 2^30120023 is an apocalyptic number.

30120023 is a deficient number, since it is larger than the sum of its proper divisors (1).

30120023 is an equidigital number, since it uses as much as digits as its factorization.

30120023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 30120023 is about 5488.1711890210. The cubic root of 30120023 is about 311.1370762862.

Adding to 30120023 its reverse (32002103), we get a palindrome (62122126).

The spelling of 30120023 in words is "thirty million, one hundred twenty thousand, twenty-three".