23311043302240 has 96 divisors (see below), whose sum is σ = 55225672992000. Its totient is φ = 9298463344128.

The previous prime is 23311043302237. The next prime is 23311043302307. The reversal of 23311043302240 is 4220334011332.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 23311043302199 and 23311043302208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 487461051 + ... + 487508869.

It is an arithmetic number, because the mean of its divisors is an integer number (575267427000).

Almost surely, 2^{23311043302240} is an apocalyptic number.

23311043302240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23311043302240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27612836496000).

23311043302240 is an abundant number, since it is smaller than the sum of its proper divisors (31914629689760).

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

23311043302240 is a wasteful number, since it uses less digits than its factorization.

23311043302240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56252 (or 56244 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 23311043302240 its reverse (4220334011332), we get a palindrome (27531377313572).

The spelling of 23311043302240 in words is "twenty-three trillion, three hundred eleven billion, forty-three million, three hundred two thousand, two hundred forty".