23311020431040 has 224 divisors, whose sum is σ = 78311563691520. Its totient is φ = 5858585542656.

The previous prime is 23311020431009. The next prime is 23311020431047. The reversal of 23311020431040 is 4013402011332.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 23311020431040.

It is not an unprimeable number, because it can be changed into a prime (23311020431047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 209397 + ... + 6831243.

Almost surely, 2^{23311020431040} is an apocalyptic number.

23311020431040 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 23311020431040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39155781845760).

23311020431040 is an abundant number, since it is smaller than the sum of its proper divisors (55000543260480).

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

23311020431040 is a wasteful number, since it uses less digits than its factorization.

23311020431040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6622079 (or 6622069 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 23311020431040 its reverse (4013402011332), we get a palindrome (27324422442372).

The spelling of 23311020431040 in words is "twenty-three trillion, three hundred eleven billion, twenty million, four hundred thirty-one thousand, forty".