23311320232140 has 168 divisors, whose sum is σ = 73421389844880. Its totient is φ = 6214293385344.

The previous prime is 23311320232129. The next prime is 23311320232159. The reversal of 23311320232140 is 4123202311332.

23311320232140 is a `hidden beast` number, since 2 + 3 + 3 + 11 + 320 + 2 + 321 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 44016231 + ... + 44542689.

It is an arithmetic number, because the mean of its divisors is an integer number (437032082410).

Almost surely, 2^{23311320232140} is an apocalyptic number.

23311320232140 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 23311320232140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36710694922440).

23311320232140 is an abundant number, since it is smaller than the sum of its proper divisors (50110069612740).

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

23311320232140 is a wasteful number, since it uses less digits than its factorization.

23311320232140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529523 (or 529506 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 23311320232140 its reverse (4123202311332), we get a palindrome (27434522543472).

The spelling of 23311320232140 in words is "twenty-three trillion, three hundred eleven billion, three hundred twenty million, two hundred thirty-two thousand, one hundred forty".