20342031140443 has 6 divisors (see below), whose sum is σ = 21264921022604. Its totient is φ = 19457595003396.

The previous prime is 20342031140437. The next prime is 20342031140491. The reversal of 20342031140443 is 34404113024302.

It is a de Polignac number, because none of the positive numbers 2^k-20342031140443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20342031140143) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19226872005 + ... + 19226873062.

Almost surely, 2^{20342031140443} is an apocalyptic number.

20342031140443 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20342031140443 is a deficient number, since it is larger than the sum of its proper divisors (922889882161).

20342031140443 is an equidigital number, since it uses as much as digits as its factorization.

20342031140443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38453745113 (or 38453745090 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 20342031140443 its reverse (34404113024302), we get a palindrome (54746144164745).

The spelling of 20342031140443 in words is "twenty trillion, three hundred forty-two billion, thirty-one million, one hundred forty thousand, four hundred forty-three".