23123131011 has 12 divisors (see below), whose sum is σ = 33407527920. Its totient is φ = 15411982320.

The previous prime is 23123131001. The next prime is 23123131021. The reversal of 23123131011 is 11013132132.

23123131011 is a `hidden beast` number, since 2 + 312 + 31 + 310 + 11 = 666.

It is an interprime number because it is at equal distance from previous prime (23123131001) and next prime (23123131021).

It is not a de Polignac number, because 23123131011 - 2¹⁹ = 23122606723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23123131001) 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 11 ways as a sum of consecutive naturals, for example, 243600 + ... + 324941.

It is an arithmetic number, because the mean of its divisors is an integer number (2783960660).

Almost surely, 2^23123131011 is an apocalyptic number.

23123131011 is a deficient number, since it is larger than the sum of its proper divisors (10284396909).

23123131011 is a wasteful number, since it uses less digits than its factorization.

23123131011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573066 (or 573063 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 23123131011 its reverse (11013132132), we get a palindrome (34136263143).

The spelling of 23123131011 in words is "twenty-three billion, one hundred twenty-three million, one hundred thirty-one thousand, eleven".