20434130343 has 48 divisors (see below), whose sum is σ = 33090718752. Its totient is φ = 12043392000.

The previous prime is 20434130333. The next prime is 20434130399. The reversal of 20434130343 is 34303143402.

20434130343 is a `hidden beast` number, since 204 + 3 + 413 + 0 + 3 + 43 = 666.

It is not a de Polignac number, because 20434130343 - 2²¹ = 20432033191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20434130333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1278763 + ... + 1294643.

It is an arithmetic number, because the mean of its divisors is an integer number (689389974).

Almost surely, 2^20434130343 is an apocalyptic number.

20434130343 is a deficient number, since it is larger than the sum of its proper divisors (12656588409).

20434130343 is a wasteful number, since it uses less digits than its factorization.

20434130343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16256 (or 16253 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 20434130343 its reverse (34303143402), we get a palindrome (54737273745).

The spelling of 20434130343 in words is "twenty billion, four hundred thirty-four million, one hundred thirty thousand, three hundred forty-three".