20312304215 has 32 divisors (see below), whose sum is σ = 28815843840. Its totient is φ = 13454377344.

The previous prime is 20312304197. The next prime is 20312304227. The reversal of 20312304215 is 51240321302.

It is a cyclic number.

It is not a de Polignac number, because 20312304215 - 2⁸ = 20312303959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123584 + ... + 236426.

It is an arithmetic number, because the mean of its divisors is an integer number (900495120).

Almost surely, 2^20312304215 is an apocalyptic number.

20312304215 is a deficient number, since it is larger than the sum of its proper divisors (8503539625).

20312304215 is a wasteful number, since it uses less digits than its factorization.

20312304215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113031.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 20312304215 its reverse (51240321302), we get a palindrome (71552625517).

The spelling of 20312304215 in words is "twenty billion, three hundred twelve million, three hundred four thousand, two hundred fifteen".