20331331200 has 144 divisors (see below), whose sum is σ = 72546951750. Its totient is φ = 5421680640.

The previous prime is 20331331177. The next prime is 20331331201. The reversal of 20331331200 is 213313302.

20331331200 is a `hidden beast` number, since 2 + 0 + 331 + 331 + 2 + 0 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 10078553664 + 10252777536 = 100392^2 + 101256^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20331331201) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 324175 + ... + 381774.

Almost surely, 2^20331331200 is an apocalyptic number.

20331331200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20331331200 is an abundant number, since it is smaller than the sum of its proper divisors (52215620550).

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

20331331200 is a wasteful number, since it uses less digits than its factorization.

20331331200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705979 (or 705959 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20331331200 its reverse (213313302), we get a palindrome (20544644502).

The spelling of 20331331200 in words is "twenty billion, three hundred thirty-one million, three hundred thirty-one thousand, two hundred".