20434353313 has 12 divisors (see below), whose sum is σ = 22578522624. Its totient is φ = 18479403800.

The previous prime is 20434353307. The next prime is 20434353341. The reversal of 20434353313 is 31335343402.

It is not a de Polignac number, because 20434353313 - 2⁵ = 20434353281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20434353113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 418981 + ... + 465202.

It is an arithmetic number, because the mean of its divisors is an integer number (1881543552).

Almost surely, 2^20434353313 is an apocalyptic number.

It is an amenable number.

20434353313 is a deficient number, since it is larger than the sum of its proper divisors (2144169311).

20434353313 is a wasteful number, since it uses less digits than its factorization.

20434353313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884396 (or 884385 counting only the distinct ones).

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

Adding to 20434353313 its reverse (31335343402), we get a palindrome (51769696715).

The spelling of 20434353313 in words is "twenty billion, four hundred thirty-four million, three hundred fifty-three thousand, three hundred thirteen".