11123203123231 has 8 divisors (see below), whose sum is σ = 11643435234144. Its totient is φ = 10606022227680.

The previous prime is 11123203123199. The next prime is 11123203123267. The reversal of 11123203123231 is 13232130232111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11123203123231 - 2⁵ = 11123203123199 is a prime.

It is a super-2 number, since 2×11123203123231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11123203123196 and 11123203123205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123203123271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 762796380 + ... + 762810961.

It is an arithmetic number, because the mean of its divisors is an integer number (1455429404268).

Almost surely, 2^{11123203123231} is an apocalyptic number.

11123203123231 is a deficient number, since it is larger than the sum of its proper divisors (520232110913).

11123203123231 is a wasteful number, since it uses less digits than its factorization.

11123203123231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525607681.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 11123203123231 its reverse (13232130232111), we get a palindrome (24355333355342).

The spelling of 11123203123231 in words is "eleven trillion, one hundred twenty-three billion, two hundred three million, one hundred twenty-three thousand, two hundred thirty-one".