9923311111 has 16 divisors (see below), whose sum is σ = 12287303424. Its totient is φ = 7819185024.

The previous prime is 9923311037. The next prime is 9923311117. The reversal of 9923311111 is 1111133299.

It is not a de Polignac number, because 9923311111 - 2⁷ = 9923310983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9923311117) 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, 964525 + ... + 974758.

It is an arithmetic number, because the mean of its divisors is an integer number (767956464).

Almost surely, 2^9923311111 is an apocalyptic number.

9923311111 is a deficient number, since it is larger than the sum of its proper divisors (2363992313).

9923311111 is a wasteful number, since it uses less digits than its factorization.

9923311111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939350.

The product of its digits is 1458, while the sum is 31.

The square root of 9923311111 is about 99615.8175743190. The cubic root of 9923311111 is about 2148.9131778372.

The spelling of 9923311111 in words is "nine billion, nine hundred twenty-three million, three hundred eleven thousand, one hundred eleven".