23105532011 has 4 divisors (see below), whose sum is σ = 23271759000. Its totient is φ = 22939305024.

The previous prime is 23105531947. The next prime is 23105532061. The reversal of 23105532011 is 11023550132.

It is a happy number.

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 23105532011 - 2⁶ = 23105531947 is a prime.

It is a super-2 number, since 2×23105532011² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23105532061) 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, 83113286 + ... + 83113563.

It is an arithmetic number, because the mean of its divisors is an integer number (5817939750).

Almost surely, 2^23105532011 is an apocalyptic number.

23105532011 is a deficient number, since it is larger than the sum of its proper divisors (166226989).

23105532011 is a wasteful number, since it uses less digits than its factorization.

23105532011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166226988.

The product of its (nonzero) digits is 900, while the sum is 23.

The spelling of 23105532011 in words is "twenty-three billion, one hundred five million, five hundred thirty-two thousand, eleven".