9913111423 has 4 divisors (see below), whose sum is σ = 9913963248. Its totient is φ = 9912259600.

The previous prime is 9913111399. The next prime is 9913111489. The reversal of 9913111423 is 3241113199.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3241113199 = 199 ⋅16287001.

It is a cyclic number.

It is not a de Polignac number, because 9913111423 - 2¹³ = 9913103231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9913111123) 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, 408211 + ... + 431812.

It is an arithmetic number, because the mean of its divisors is an integer number (2478490812).

Almost surely, 2^9913111423 is an apocalyptic number.

9913111423 is a deficient number, since it is larger than the sum of its proper divisors (851825).

9913111423 is a wasteful number, since it uses less digits than its factorization.

9913111423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 851824.

The product of its digits is 5832, while the sum is 34.

The square root of 9913111423 is about 99564.6092896467. The cubic root of 9913111423 is about 2148.1766710549.

The spelling of 9913111423 in words is "nine billion, nine hundred thirteen million, one hundred eleven thousand, four hundred twenty-three".