23311420044 has 72 divisors (see below), whose sum is σ = 60036674544. Its totient is φ = 7034649600.

The previous prime is 23311420043. The next prime is 23311420091. The reversal of 23311420044 is 44002411332.

It is a junction number, because it is equal to n+sod(n) for n = 23311419996 and 23311420023.

It is not an unprimeable number, because it can be changed into a prime (23311420043) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 316624 + ... + 383240.

It is an arithmetic number, because the mean of its divisors is an integer number (833842702).

Almost surely, 2^23311420044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23311420044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30018337272).

23311420044 is an abundant number, since it is smaller than the sum of its proper divisors (36725254500).

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

23311420044 is a wasteful number, since it uses less digits than its factorization.

23311420044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66887 (or 66874 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 23311420044 its reverse (44002411332), we get a palindrome (67313831376).

The spelling of 23311420044 in words is "twenty-three billion, three hundred eleven million, four hundred twenty thousand, forty-four".