30432120209 has 2 divisors, whose sum is σ = 30432120210. Its totient is φ = 30432120208.

The previous prime is 30432120197. The next prime is 30432120211. The reversal of 30432120209 is 90202123403.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23809415809 + 6622704400 = 154303^2 + 81380^2 .

It is a cyclic number.

It is not a de Polignac number, because 30432120209 - 2⁸ = 30432119953 is a prime.

It is a super-2 number, since 2×30432120209² (a number of 22 digits) contains 22 as substring.

Together with 30432120211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30432150209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15216060104 + 15216060105.

It is an arithmetic number, because the mean of its divisors is an integer number (15216060105).

Almost surely, 2^30432120209 is an apocalyptic number.

It is an amenable number.

30432120209 is a deficient number, since it is larger than the sum of its proper divisors (1).

30432120209 is an equidigital number, since it uses as much as digits as its factorization.

30432120209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The spelling of 30432120209 in words is "thirty billion, four hundred thirty-two million, one hundred twenty thousand, two hundred nine".