2311111021023 has 96 divisors (see below), whose sum is σ = 4070741875200. Its totient is φ = 1233389058048.

The previous prime is 2311111021003. The next prime is 2311111021067. The reversal of 2311111021023 is 3201201111132.

It is not a de Polignac number, because 2311111021023 - 2²⁴ = 2311094243807 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2311111020987 and 2311111021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311111021003) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 115033563 + ... + 115053651.

It is an arithmetic number, because the mean of its divisors is an integer number (42403561200).

Almost surely, 2^{2311111021023} is an apocalyptic number.

2311111021023 is a deficient number, since it is larger than the sum of its proper divisors (1759630854177).

2311111021023 is a wasteful number, since it uses less digits than its factorization.

2311111021023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20941 (or 20938 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 2311111021023 its reverse (3201201111132), we get a palindrome (5512312132155).

The spelling of 2311111021023 in words is "two trillion, three hundred eleven billion, one hundred eleven million, twenty-one thousand, twenty-three".