23311201111123 has 4 divisors (see below), whose sum is σ = 23639527887408. Its totient is φ = 22982874334840.

The previous prime is 23311201111049. The next prime is 23311201111189. The reversal of 23311201111123 is 32111110211332.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23311201111123 - 2¹⁷ = 23311200980051 is a prime.

It is a super-2 number, since 2×23311201111123² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23311201111094 and 23311201111103.

It is not an unprimeable number, because it can be changed into a prime (23311201811123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164163388036 + ... + 164163388177.

It is an arithmetic number, because the mean of its divisors is an integer number (5909881971852).

Almost surely, 2^{23311201111123} is an apocalyptic number.

23311201111123 is a deficient number, since it is larger than the sum of its proper divisors (328326776285).

23311201111123 is an equidigital number, since it uses as much as digits as its factorization.

23311201111123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328326776284.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 23311201111123 its reverse (32111110211332), we get a palindrome (55422311322455).

The spelling of 23311201111123 in words is "twenty-three trillion, three hundred eleven billion, two hundred one million, one hundred eleven thousand, one hundred twenty-three".