20313542440143 has 16 divisors (see below), whose sum is σ = 30094211004000. Its totient is φ = 13542328301760.

The previous prime is 20313542440129. The next prime is 20313542440159. The reversal of 20313542440143 is 34104424531302.

20313542440143 is a `hidden beast` number, since 2 + 0 + 3 + 1 + 35 + 42 + 440 + 143 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-20313542440143 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20313542440098 and 20313542440107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313542440843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15638683 + ... + 16887731.

It is an arithmetic number, because the mean of its divisors is an integer number (1880888187750).

Almost surely, 2^{20313542440143} is an apocalyptic number.

20313542440143 is a deficient number, since it is larger than the sum of its proper divisors (9780668563857).

20313542440143 is a wasteful number, since it uses less digits than its factorization.

20313542440143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851399 (or 1851393 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

Adding to 20313542440143 its reverse (34104424531302), we get a palindrome (54417966971445).

The spelling of 20313542440143 in words is "twenty trillion, three hundred thirteen billion, five hundred forty-two million, four hundred forty thousand, one hundred forty-three".