23111000506011 has 32 divisors (see below), whose sum is σ = 35933116423680. Its totient is φ = 13070908716800.

The previous prime is 23111000505961. The next prime is 23111000506019. The reversal of 23111000506011 is 11060500011132.

It is a happy number.

It is not a de Polignac number, because 23111000506011 - 2⁶ = 23111000505947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23111000506019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 371301516 + ... + 371363753.

It is an arithmetic number, because the mean of its divisors is an integer number (1122909888240).

Almost surely, 2^{23111000506011} is an apocalyptic number.

23111000506011 is a deficient number, since it is larger than the sum of its proper divisors (12822115917669).

23111000506011 is a wasteful number, since it uses less digits than its factorization.

23111000506011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742665347.

The product of its (nonzero) digits is 180, while the sum is 21.

Adding to 23111000506011 its reverse (11060500011132), we get a palindrome (34171500517143).

The spelling of 23111000506011 in words is "twenty-three trillion, one hundred eleven billion, five hundred six thousand, eleven".