20131300223442 has 24 divisors (see below), whose sum is σ = 44017980615180. Its totient is φ = 6648869797920.

The previous prime is 20131300223381. The next prime is 20131300223509. The reversal of 20131300223442 is 24432200313102.

20131300223442 is a `hidden beast` number, since 2 + 0 + 1 + 313 + 0 + 0 + 2 + 2 + 344 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20115682472601 + 15617750841 = 4485051^2 + 124971^2 .

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, 5130298809 + ... + 5130302732.

Almost surely, 2^{20131300223442} is an apocalyptic number.

20131300223442 is an abundant number, since it is smaller than the sum of its proper divisors (23886680391738).

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

20131300223442 is a wasteful number, since it uses less digits than its factorization.

20131300223442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10260601658 (or 10260601655 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 20131300223442 its reverse (24432200313102), we get a palindrome (44563500536544).

The spelling of 20131300223442 in words is "twenty trillion, one hundred thirty-one billion, three hundred million, two hundred twenty-three thousand, four hundred forty-two".