23311312033220 has 24 divisors (see below), whose sum is σ = 48954338160000. Its totient is φ = 9324413786592.

The previous prime is 23311312033189. The next prime is 23311312033231. The reversal of 23311312033220 is 2233021311332.

It is a self number, because there is not a number n which added to its sum of digits gives 23311312033220.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5206940 + ... + 8586899.

It is an arithmetic number, because the mean of its divisors is an integer number (2039764090000).

Almost surely, 2^{23311312033220} is an apocalyptic number.

23311312033220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23311312033220 is an abundant number, since it is smaller than the sum of its proper divisors (25643026126780).

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

23311312033220 is a wasteful number, since it uses less digits than its factorization.

23311312033220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13878347 (or 13878345 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 23311312033220 its reverse (2233021311332), we get a palindrome (25544333344552).

The spelling of 23311312033220 in words is "twenty-three trillion, three hundred eleven billion, three hundred twelve million, thirty-three thousand, two hundred twenty".