20311412341243 has 4 divisors (see below), whose sum is σ = 20312128846800. Its totient is φ = 20310695835688.

The previous prime is 20311412341229. The next prime is 20311412341271. The reversal of 20311412341243 is 34214321411302.

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 20311412341243 - 2³³ = 20302822406651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20311412341273) 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, 358210255 + ... + 358266952.

It is an arithmetic number, because the mean of its divisors is an integer number (5078032211700).

Almost surely, 2^{20311412341243} is an apocalyptic number.

20311412341243 is a deficient number, since it is larger than the sum of its proper divisors (716505557).

20311412341243 is an equidigital number, since it uses as much as digits as its factorization.

20311412341243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716505556.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 20311412341243 its reverse (34214321411302), we get a palindrome (54525733752545).

The spelling of 20311412341243 in words is "twenty trillion, three hundred eleven billion, four hundred twelve million, three hundred forty-one thousand, two hundred forty-three".