20305103315 has 32 divisors (see below), whose sum is σ = 28665584640. Its totient is φ = 13518094464.

The previous prime is 20305103303. The next prime is 20305103339. The reversal of 20305103315 is 51330150302.

It is not a de Polignac number, because 20305103315 - 2³⁴ = 3125234131 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 210941 + ... + 291729.

It is an arithmetic number, because the mean of its divisors is an integer number (895799520).

Almost surely, 2^20305103315 is an apocalyptic number.

20305103315 is a deficient number, since it is larger than the sum of its proper divisors (8360481325).

20305103315 is a wasteful number, since it uses less digits than its factorization.

20305103315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81011.

The product of its (nonzero) digits is 1350, while the sum is 23.

Adding to 20305103315 its reverse (51330150302), we get a palindrome (71635253617).

The spelling of 20305103315 in words is "twenty billion, three hundred five million, one hundred three thousand, three hundred fifteen".