30303412309 has 4 divisors (see below), whose sum is σ = 30478576716. Its totient is φ = 30128247904.

The previous prime is 30303412289. The next prime is 30303412333. The reversal of 30303412309 is 90321430303.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15445021284 + 14858391025 = 124278^2 + 121895^2 .

It is a cyclic number.

It is not a de Polignac number, because 30303412309 - 2¹⁵ = 30303379541 is a prime.

It is a super-2 number, since 2×30303412309² (a number of 22 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30303418309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87581944 + ... + 87582289.

It is an arithmetic number, because the mean of its divisors is an integer number (7619644179).

Almost surely, 2^30303412309 is an apocalyptic number.

It is an amenable number.

30303412309 is a deficient number, since it is larger than the sum of its proper divisors (175164407).

30303412309 is a wasteful number, since it uses less digits than its factorization.

30303412309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175164406.

The product of its (nonzero) digits is 5832, while the sum is 28.

The spelling of 30303412309 in words is "thirty billion, three hundred three million, four hundred twelve thousand, three hundred nine".