20434323343331 has 4 divisors (see below), whose sum is σ = 20434384660200. Its totient is φ = 20434262026464.

The previous prime is 20434323343309. The next prime is 20434323343333. The reversal of 20434323343331 is 13334332343402.

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 20434323343331 - 2¹⁸ = 20434323081187 is a prime.

It is a super-2 number, since 2×20434323343331² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20434323343333) 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, 30155801 + ... + 30825978.

It is an arithmetic number, because the mean of its divisors is an integer number (5108596165050).

Almost surely, 2^{20434323343331} is an apocalyptic number.

20434323343331 is a deficient number, since it is larger than the sum of its proper divisors (61316869).

20434323343331 is an equidigital number, since it uses as much as digits as its factorization.

20434323343331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61316868.

The product of its (nonzero) digits is 559872, while the sum is 38.

Adding to 20434323343331 its reverse (13334332343402), we get a palindrome (33768655686733).

The spelling of 20434323343331 in words is "twenty trillion, four hundred thirty-four billion, three hundred twenty-three million, three hundred forty-three thousand, three hundred thirty-one".