20134430323 has 4 divisors (see below), whose sum is σ = 23010777520. Its totient is φ = 17258083128.

The previous prime is 20134430311. The next prime is 20134430399. The reversal of 20134430323 is 32303443102.

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 20134430323 - 2¹³ = 20134422131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20134430923) 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, 1438173588 + ... + 1438173601.

It is an arithmetic number, because the mean of its divisors is an integer number (5752694380).

Almost surely, 2^20134430323 is an apocalyptic number.

20134430323 is a deficient number, since it is larger than the sum of its proper divisors (2876347197).

20134430323 is an equidigital number, since it uses as much as digits as its factorization.

20134430323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2876347196.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 20134430323 its reverse (32303443102), we get a palindrome (52437873425).

The spelling of 20134430323 in words is "twenty billion, one hundred thirty-four million, four hundred thirty thousand, three hundred twenty-three".