20100134323 has 4 divisors (see below), whose sum is σ = 20100484768. Its totient is φ = 20099783880.

The previous prime is 20100134317. The next prime is 20100134357. The reversal of 20100134323 is 32343100102.

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 20100134323 - 2¹³ = 20100126131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20100134323.

It is not an unprimeable number, because it can be changed into a prime (20100134303) 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, 66843 + ... + 211348.

It is an arithmetic number, because the mean of its divisors is an integer number (5025121192).

Almost surely, 2^20100134323 is an apocalyptic number.

20100134323 is a deficient number, since it is larger than the sum of its proper divisors (350445).

20100134323 is an equidigital number, since it uses as much as digits as its factorization.

20100134323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350444.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20100134323 its reverse (32343100102), we get a palindrome (52443234425).

The spelling of 20100134323 in words is "twenty billion, one hundred million, one hundred thirty-four thousand, three hundred twenty-three".