20312321113 has 16 divisors (see below), whose sum is σ = 23365165824. Its totient is φ = 17297501760.

The previous prime is 20312321101. The next prime is 20312321167. The reversal of 20312321113 is 31112321302.

It is not a de Polignac number, because 20312321113 - 2⁹ = 20312320601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20312321213) 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 15 ways as a sum of consecutive naturals, for example, 992403 + ... + 1012663.

It is an arithmetic number, because the mean of its divisors is an integer number (1460322864).

Almost surely, 2^20312321113 is an apocalyptic number.

It is an amenable number.

20312321113 is a deficient number, since it is larger than the sum of its proper divisors (3052844711).

20312321113 is a wasteful number, since it uses less digits than its factorization.

20312321113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21192.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20312321113 its reverse (31112321302), we get a palindrome (51424642415).

The spelling of 20312321113 in words is "twenty billion, three hundred twelve million, three hundred twenty-one thousand, one hundred thirteen".