30312212215303 has 4 divisors (see below), whose sum is σ = 30312232606840. Its totient is φ = 30312191823768.

The previous prime is 30312212215297. The next prime is 30312212215319. The reversal of 30312212215303 is 30351221221303.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30312212215303 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 (30312212015303) 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, 7774308 + ... + 11002921.

It is an arithmetic number, because the mean of its divisors is an integer number (7578058151710).

Almost surely, 2^{30312212215303} is an apocalyptic number.

30312212215303 is a deficient number, since it is larger than the sum of its proper divisors (20391537).

30312212215303 is a wasteful number, since it uses less digits than its factorization.

30312212215303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20391536.

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 30312212215303 its reverse (30351221221303), we get a palindrome (60663433436606).

The spelling of 30312212215303 in words is "thirty trillion, three hundred twelve billion, two hundred twelve million, two hundred fifteen thousand, three hundred three".