23531162011 has 4 divisors (see below), whose sum is σ = 26892756592. Its totient is φ = 20169567432.

The previous prime is 23531161993. The next prime is 23531162063. The reversal of 23531162011 is 11026113532.

It is a happy number.

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

It is not a de Polignac number, because 23531162011 - 2¹¹ = 23531159963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23531162071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1680797280 + ... + 1680797293.

It is an arithmetic number, because the mean of its divisors is an integer number (6723189148).

Almost surely, 2^23531162011 is an apocalyptic number.

23531162011 is a deficient number, since it is larger than the sum of its proper divisors (3361594581).

23531162011 is an equidigital number, since it uses as much as digits as its factorization.

23531162011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3361594580.

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 23531162011 its reverse (11026113532), we get a palindrome (34557275543).

The spelling of 23531162011 in words is "twenty-three billion, five hundred thirty-one million, one hundred sixty-two thousand, eleven".