20143340313243 has 16 divisors (see below), whose sum is σ = 30694976094720. Its totient is φ = 11510344322496.

The previous prime is 20143340313223. The next prime is 20143340313247. The reversal of 20143340313243 is 34231304334102.

It is a happy number.

It is not a de Polignac number, because 20143340313243 - 2⁸ = 20143340312987 is a prime.

It is a super-2 number, since 2×20143340313243² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20143340313247) 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, 3825255 + ... + 7410752.

It is an arithmetic number, because the mean of its divisors is an integer number (1918436005920).

Almost surely, 2^{20143340313243} is an apocalyptic number.

20143340313243 is a deficient number, since it is larger than the sum of its proper divisors (10551635781477).

20143340313243 is a wasteful number, since it uses less digits than its factorization.

20143340313243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11321386.

The product of its (nonzero) digits is 62208, while the sum is 33.

Adding to 20143340313243 its reverse (34231304334102), we get a palindrome (54374644647345).

The spelling of 20143340313243 in words is "twenty trillion, one hundred forty-three billion, three hundred forty million, three hundred thirteen thousand, two hundred forty-three".