20312232200 has 96 divisors (see below), whose sum is σ = 52612648200. Its totient is φ = 7241256960.

The previous prime is 20312232197. The next prime is 20312232203. The reversal of 20312232200 is 223221302.

It is an interprime number because it is at equal distance from previous prime (20312232197) and next prime (20312232203).

It can be written as a sum of positive squares in 12 ways, for example, as 892694884 + 19419537316 = 29878^2 + 139354^2 .

It is not an unprimeable number, because it can be changed into a prime (20312232203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59297 + ... + 210096.

Almost surely, 2^20312232200 is an apocalyptic number.

20312232200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20312232200 is an abundant number, since it is smaller than the sum of its proper divisors (32300416000).

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

20312232200 is a wasteful number, since it uses less digits than its factorization.

20312232200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269451 (or 269442 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 20312232200 its reverse (223221302), we get a palindrome (20535453502).

The spelling of 20312232200 in words is "twenty billion, three hundred twelve million, two hundred thirty-two thousand, two hundred".