30312212215305 has 16 divisors (see below), whose sum is σ = 48517067453184. Its totient is φ = 16160670545280.

The previous prime is 30312212215297. The next prime is 30312212215319. The reversal of 30312212215305 is 50351221221303.

It is not a de Polignac number, because 30312212215305 - 2³ = 30312212215297 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365121876 + ... + 365204885.

It is an arithmetic number, because the mean of its divisors is an integer number (3032316715824).

Almost surely, 2^{30312212215305} is an apocalyptic number.

It is an amenable number.

30312212215305 is a deficient number, since it is larger than the sum of its proper divisors (18204855237879).

30312212215305 is a wasteful number, since it uses less digits than its factorization.

30312212215305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730329536.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 30312212215305 its reverse (50351221221303), we get a palindrome (80663433436608).

The spelling of 30312212215305 in words is "thirty trillion, three hundred twelve billion, two hundred twelve million, two hundred fifteen thousand, three hundred five".