23131210011 has 32 divisors (see below), whose sum is σ = 37974182400. Its totient is φ = 12196168704.

The previous prime is 23131210007. The next prime is 23131210049. The reversal of 23131210011 is 11001213132.

It is a happy number.

It is not a de Polignac number, because 23131210011 - 2² = 23131210007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23131210001) 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, 721131 + ... + 752523.

It is an arithmetic number, because the mean of its divisors is an integer number (1186693200).

Almost surely, 2^23131210011 is an apocalyptic number.

23131210011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23131210011 is a deficient number, since it is larger than the sum of its proper divisors (14842972389).

23131210011 is a wasteful number, since it uses less digits than its factorization.

23131210011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34115.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 23131210011 its reverse (11001213132), we get a palindrome (34132423143).

The spelling of 23131210011 in words is "twenty-three billion, one hundred thirty-one million, two hundred ten thousand, eleven".