20302303532143 has 4 divisors (see below), whose sum is σ = 20302347820168. Its totient is φ = 20302259244120.

The previous prime is 20302303532131. The next prime is 20302303532191. The reversal of 20302303532143 is 34123530320302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20302303532143 - 2²⁵ = 20302269977711 is a prime.

It is a super-2 number, since 2×20302303532143² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20302303532443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21449121 + ... + 22375642.

It is an arithmetic number, because the mean of its divisors is an integer number (5075586955042).

Almost surely, 2^{20302303532143} is an apocalyptic number.

20302303532143 is a deficient number, since it is larger than the sum of its proper divisors (44288025).

20302303532143 is an equidigital number, since it uses as much as digits as its factorization.

20302303532143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44288024.

The product of its (nonzero) digits is 38880, while the sum is 31.

Adding to 20302303532143 its reverse (34123530320302), we get a palindrome (54425833852445).

The spelling of 20302303532143 in words is "twenty trillion, three hundred two billion, three hundred three million, five hundred thirty-two thousand, one hundred forty-three".