20203110323443 has 4 divisors (see below), whose sum is σ = 20241739598008. Its totient is φ = 20164481048880.

The previous prime is 20203110323399. The next prime is 20203110323479. The reversal of 20203110323443 is 34432301130202.

It is a happy number.

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 20203110323443 - 2¹⁷ = 20203110192371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20203110303443) 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, 19314636498 + ... + 19314637543.

It is an arithmetic number, because the mean of its divisors is an integer number (5060434899502).

Almost surely, 2^{20203110323443} is an apocalyptic number.

20203110323443 is a deficient number, since it is larger than the sum of its proper divisors (38629274565).

20203110323443 is an equidigital number, since it uses as much as digits as its factorization.

20203110323443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38629274564.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 20203110323443 its reverse (34432301130202), we get a palindrome (54635411453645).

The spelling of 20203110323443 in words is "twenty trillion, two hundred three billion, one hundred ten million, three hundred twenty-three thousand, four hundred forty-three".