20213142342343 has 8 divisors (see below), whose sum is σ = 22092542674560. Its totient is φ = 18410452227840.

The previous prime is 20213142342317. The next prime is 20213142342391. The reversal of 20213142342343 is 34324324131202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20213142342343 is a prime.

It is a super-2 number, since 2×20213142342343² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20213142342299 and 20213142342308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20213142342313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19177553878 + ... + 19177554931.

It is an arithmetic number, because the mean of its divisors is an integer number (2761567834320).

Almost surely, 2^{20213142342343} is an apocalyptic number.

20213142342343 is a deficient number, since it is larger than the sum of its proper divisors (1879400332217).

20213142342343 is a wasteful number, since it uses less digits than its factorization.

20213142342343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38355108857.

The product of its (nonzero) digits is 82944, while the sum is 34.

Adding to 20213142342343 its reverse (34324324131202), we get a palindrome (54537466473545).

The spelling of 20213142342343 in words is "twenty trillion, two hundred thirteen billion, one hundred forty-two million, three hundred forty-two thousand, three hundred forty-three".