20315235200 has 96 divisors (see below), whose sum is σ = 54045473160. Its totient is φ = 7500994560.

The previous prime is 20315235197. The next prime is 20315235211. The reversal of 20315235200 is 253251302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 202574 + ... + 285773.

Almost surely, 2^20315235200 is an apocalyptic number.

20315235200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20315235200 is an abundant number, since it is smaller than the sum of its proper divisors (33730237960).

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

20315235200 is a wasteful number, since it uses less digits than its factorization.

20315235200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488384 (or 488367 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

Adding to 20315235200 its reverse (253251302), we get a palindrome (20568486502).

The spelling of 20315235200 in words is "twenty billion, three hundred fifteen million, two hundred thirty-five thousand, two hundred".