20312333311400 has 96 divisors (see below), whose sum is σ = 52612714992600. Its totient is φ = 7241319859200.

The previous prime is 20312333311379. The next prime is 20312333311463. The reversal of 20312333311400 is 411333321302.

It can be written as a sum of positive squares in 12 ways, for example, as 18263360164 + 20294069951236 = 135142^2 + 4504894^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 20312333311400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 134621771 + ... + 134772570.

Almost surely, 2^{20312333311400} is an apocalyptic number.

20312333311400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20312333311400 is an abundant number, since it is smaller than the sum of its proper divisors (32300381681200).

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

20312333311400 is a wasteful number, since it uses less digits than its factorization.

20312333311400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269394399 (or 269394390 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

Adding to 20312333311400 its reverse (411333321302), we get a palindrome (20723666632702).

The spelling of 20312333311400 in words is "twenty trillion, three hundred twelve billion, three hundred thirty-three million, three hundred eleven thousand, four hundred".