20312115051 has 32 divisors (see below), whose sum is σ = 28464403968. Its totient is φ = 12859418880.

The previous prime is 20312115001. The next prime is 20312115119. The reversal of 20312115051 is 15051121302.

It is not a de Polignac number, because 20312115051 - 2³⁰ = 19238373227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20312115001) by changing a digit.

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, 7760295 + ... + 7762911.

It is an arithmetic number, because the mean of its divisors is an integer number (889512624).

Almost surely, 2^20312115051 is an apocalyptic number.

20312115051 is a deficient number, since it is larger than the sum of its proper divisors (8152288917).

20312115051 is a wasteful number, since it uses less digits than its factorization.

20312115051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3411.

The product of its (nonzero) digits is 300, while the sum is 21.

Adding to 20312115051 its reverse (15051121302), we get a palindrome (35363236353).

The spelling of 20312115051 in words is "twenty billion, three hundred twelve million, one hundred fifteen thousand, fifty-one".