23011213311 has 24 divisors (see below), whose sum is σ = 35199687744. Its totient is φ = 14435919360.

The previous prime is 23011213289. The next prime is 23011213321. The reversal of 23011213311 is 11331211032.

23011213311 is a `hidden beast` number, since 230 + 1 + 121 + 3 + 311 = 666.

It is not a de Polignac number, because 23011213311 - 2²¹ = 23009116159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23011213321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1331850 + ... + 1349016.

It is an arithmetic number, because the mean of its divisors is an integer number (1466653656).

Almost surely, 2^23011213311 is an apocalyptic number.

23011213311 is a deficient number, since it is larger than the sum of its proper divisors (12188474433).

23011213311 is a wasteful number, since it uses less digits than its factorization.

23011213311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25951 (or 25948 counting only the distinct ones).

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

Adding to 23011213311 its reverse (11331211032), we get a palindrome (34342424343).

The spelling of 23011213311 in words is "twenty-three billion, eleven million, two hundred thirteen thousand, three hundred eleven".