23321312020 has 24 divisors (see below), whose sum is σ = 49003754184. Its totient is φ = 9323001216.

The previous prime is 23321311991. The next prime is 23321312071. The reversal of 23321312020 is 2021312332.

It can be written as a sum of positive squares in 4 ways, for example, as 13793796 + 23307518224 = 3714^2 + 152668^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310519 + ... + 378238.

It is an arithmetic number, because the mean of its divisors is an integer number (2041823091).

Almost surely, 2^23321312020 is an apocalyptic number.

23321312020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23321312020 is an abundant number, since it is smaller than the sum of its proper divisors (25682442164).

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

23321312020 is a wasteful number, since it uses less digits than its factorization.

23321312020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690459 (or 690457 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 23321312020 its reverse (2021312332), we get a palindrome (25342624352).

The spelling of 23321312020 in words is "twenty-three billion, three hundred twenty-one million, three hundred twelve thousand, twenty".