23131001144 has 16 divisors (see below), whose sum is σ = 43372633920. Its totient is φ = 11564965440.

The previous prime is 23131001143. The next prime is 23131001161. The reversal of 23131001144 is 44110013132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131001143) 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, 163484 + ... + 270164.

It is an arithmetic number, because the mean of its divisors is an integer number (2710789620).

Almost surely, 2^23131001144 is an apocalyptic number.

It is an amenable number.

23131001144 is a deficient number, since it is larger than the sum of its proper divisors (20241632776).

23131001144 is a wasteful number, since it uses less digits than its factorization.

23131001144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133790 (or 133786 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 23131001144 its reverse (44110013132), we get a palindrome (67241014276).

The spelling of 23131001144 in words is "twenty-three billion, one hundred thirty-one million, one thousand, one hundred forty-four".