23431321044 has 36 divisors (see below), whose sum is σ = 59234191744. Its totient is φ = 7809778512.

The previous prime is 23431321019. The next prime is 23431321091. The reversal of 23431321044 is 44012313432.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 23431320999 and 23431321017.

It is a congruent number.

It is an unprimeable number.

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, 596829 + ... + 634875.

Almost surely, 2^23431321044 is an apocalyptic number.

It is an amenable number.

23431321044 is an abundant number, since it is smaller than the sum of its proper divisors (35802870700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23431321044 is a wasteful number, since it uses less digits than its factorization.

23431321044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55164 (or 55159 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 23431321044 its reverse (44012313432), we get a palindrome (67443634476).

The spelling of 23431321044 in words is "twenty-three billion, four hundred thirty-one million, three hundred twenty-one thousand, forty-four".