20312313111 has 64 divisors (see below), whose sum is σ = 31379443200. Its totient is φ = 12976416000.

The previous prime is 20312313089. The next prime is 20312313143. The reversal of 20312313111 is 11131321302.

It is not a de Polignac number, because 20312313111 - 2¹⁰ = 20312312087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312313181) 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 63 ways as a sum of consecutive naturals, for example, 15540520 + ... + 15541826.

It is an arithmetic number, because the mean of its divisors is an integer number (490303800).

Almost surely, 2^20312313111 is an apocalyptic number.

20312313111 is a deficient number, since it is larger than the sum of its proper divisors (11067130089).

20312313111 is a wasteful number, since it uses less digits than its factorization.

20312313111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597 (or 1591 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 20312313111 its reverse (11131321302), we get a palindrome (31443634413).

The spelling of 20312313111 in words is "twenty billion, three hundred twelve million, three hundred thirteen thousand, one hundred eleven".