30121002309 has 16 divisors (see below), whose sum is σ = 42710924480. Its totient is φ = 18827665920.

The previous prime is 30121002293. The next prime is 30121002323. The reversal of 30121002309 is 90320012103.

It is a happy number.

It is not a de Polignac number, because 30121002309 - 2⁴ = 30121002293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30121002349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2718382 + ... + 2729439.

It is an arithmetic number, because the mean of its divisors is an integer number (2669432780).

Almost surely, 2^30121002309 is an apocalyptic number.

It is an amenable number.

30121002309 is a deficient number, since it is larger than the sum of its proper divisors (12589922171).

30121002309 is a wasteful number, since it uses less digits than its factorization.

30121002309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5447940.

The product of its (nonzero) digits is 324, while the sum is 21.

The spelling of 30121002309 in words is "thirty billion, one hundred twenty-one million, two thousand, three hundred nine".