20311022320000 has 160 divisors (see below), whose sum is σ = 52306579036800. Its totient is φ = 7844256000000.

The previous prime is 20311022319953. The next prime is 20311022320007. The reversal of 20311022320000 is 2322011302.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311022320007) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2057376 + ... + 6697375.

It is an arithmetic number, because the mean of its divisors is an integer number (326916118980).

Almost surely, 2^{20311022320000} is an apocalyptic number.

20311022320000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20311022320000 is an abundant number, since it is smaller than the sum of its proper divisors (31995556716800).

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

20311022320000 is an frugal number, since it uses more digits than its factorization.

20311022320000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8754814 (or 8754787 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20311022320000 its reverse (2322011302), we get a palindrome (20313344331302).

The spelling of 20311022320000 in words is "twenty trillion, three hundred eleven billion, twenty-two million, three hundred twenty thousand".