30423042109 has 2 divisors, whose sum is σ = 30423042110. Its totient is φ = 30423042108.

The previous prime is 30423042071. The next prime is 30423042157. The reversal of 30423042109 is 90124032403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22599108900 + 7823933209 = 150330^2 + 88453^2 .

It is a cyclic number.

It is not a de Polignac number, because 30423042109 - 2²⁹ = 29886171197 is a prime.

It is a super-2 number, since 2×30423042109² (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 (30423042409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15211521054 + 15211521055.

It is an arithmetic number, because the mean of its divisors is an integer number (15211521055).

Almost surely, 2^30423042109 is an apocalyptic number.

It is an amenable number.

30423042109 is a deficient number, since it is larger than the sum of its proper divisors (1).

30423042109 is an equidigital number, since it uses as much as digits as its factorization.

30423042109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The spelling of 30423042109 in words is "thirty billion, four hundred twenty-three million, forty-two thousand, one hundred nine".