30331213309 has 8 divisors (see below), whose sum is σ = 30391009208. Its totient is φ = 30271449600.

The previous prime is 30331213307. The next prime is 30331213379. The reversal of 30331213309 is 90331213303.

It can be written as a sum of positive squares in 4 ways, for example, as 1339340409 + 28991872900 = 36597^2 + 170270^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30331213309 - 2¹ = 30331213307 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 (30331213307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2793439 + ... + 2804275.

It is an arithmetic number, because the mean of its divisors is an integer number (3798876151).

Almost surely, 2^30331213309 is an apocalyptic number.

It is an amenable number.

30331213309 is a deficient number, since it is larger than the sum of its proper divisors (59795899).

30331213309 is a wasteful number, since it uses less digits than its factorization.

30331213309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16095.

The product of its (nonzero) digits is 4374, while the sum is 28.

The spelling of 30331213309 in words is "thirty billion, three hundred thirty-one million, two hundred thirteen thousand, three hundred nine".