30001143209 has 2 divisors, whose sum is σ = 30001143210. Its totient is φ = 30001143208.

The previous prime is 30001143157. The next prime is 30001143287. The reversal of 30001143209 is 90234110003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24517296400 + 5483846809 = 156580^2 + 74053^2 .

It is an emirp because it is prime and its reverse (90234110003) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30001143209 is a prime.

It is not a weakly prime, because it can be changed into another prime (30001143299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15000571604 + 15000571605.

It is an arithmetic number, because the mean of its divisors is an integer number (15000571605).

Almost surely, 2^30001143209 is an apocalyptic number.

It is an amenable number.

30001143209 is a deficient number, since it is larger than the sum of its proper divisors (1).

30001143209 is an equidigital number, since it uses as much as digits as its factorization.

30001143209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The spelling of 30001143209 in words is "thirty billion, one million, one hundred forty-three thousand, two hundred nine".