11243231423 has 16 divisors (see below), whose sum is σ = 11511336480. Its totient is φ = 10979280000.

The previous prime is 11243231407. The next prime is 11243231429. The reversal of 11243231423 is 32413234211.

It is a cyclic number.

It is not a de Polignac number, because 11243231423 - 2⁴ = 11243231407 is a prime.

It is a super-2 number, since 2×11243231423² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11243231392 and 11243231401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11243231429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2201573 + ... + 2206673.

It is an arithmetic number, because the mean of its divisors is an integer number (719458530).

Almost surely, 2^11243231423 is an apocalyptic number.

11243231423 is a deficient number, since it is larger than the sum of its proper divisors (268105057).

11243231423 is a wasteful number, since it uses less digits than its factorization.

11243231423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5498.

The product of its digits is 3456, while the sum is 26.

Adding to 11243231423 its reverse (32413234211), we get a palindrome (43656465634).

The spelling of 11243231423 in words is "eleven billion, two hundred forty-three million, two hundred thirty-one thousand, four hundred twenty-three".