23201232011 has 4 divisors (see below), whose sum is σ = 23340161712. Its totient is φ = 23062302312.

The previous prime is 23201231983. The next prime is 23201232031. The reversal of 23201232011 is 11023210232.

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 23201232011 - 2¹⁸ = 23200969867 is a prime.

It is a super-2 number, since 2×23201232011² (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 (23201232031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69464600 + ... + 69464933.

It is an arithmetic number, because the mean of its divisors is an integer number (5835040428).

Almost surely, 2^23201232011 is an apocalyptic number.

23201232011 is a deficient number, since it is larger than the sum of its proper divisors (138929701).

23201232011 is a wasteful number, since it uses less digits than its factorization.

23201232011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138929700.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 23201232011 its reverse (11023210232), we get a palindrome (34224442243).

The spelling of 23201232011 in words is "twenty-three billion, two hundred one million, two hundred thirty-two thousand, eleven".