23311032220020 has 48 divisors (see below), whose sum is σ = 65280452061888. Its totient is φ = 6215364606720.

The previous prime is 23311032220019. The next prime is 23311032220033. The reversal of 23311032220020 is 2002223011332.

It is a happy number.

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, 28044841 + ... + 28864080.

It is an arithmetic number, because the mean of its divisors is an integer number (1360009417956).

Almost surely, 2^{23311032220020} is an apocalyptic number.

23311032220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23311032220020 is an abundant number, since it is smaller than the sum of its proper divisors (41969419841868).

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

23311032220020 is a wasteful number, since it uses less digits than its factorization.

23311032220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56915760 (or 56915758 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 23311032220020 its reverse (2002223011332), we get a palindrome (25313255231352).

The spelling of 23311032220020 in words is "twenty-three trillion, three hundred eleven billion, thirty-two million, two hundred twenty thousand, twenty".