11123011331 has 8 divisors (see below), whose sum is σ = 11715974400. Its totient is φ = 10530802440.

The previous prime is 11123011321. The next prime is 11123011351. The reversal of 11123011331 is 13311032111.

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

It is a de Polignac number, because none of the positive numbers 2^k-11123011331 is a prime.

It is a super-3 number, since 3×11123011331³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11123011321) 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, 158135 + ... + 217376.

It is an arithmetic number, because the mean of its divisors is an integer number (1464496800).

Almost surely, 2^11123011331 is an apocalyptic number.

11123011331 is a deficient number, since it is larger than the sum of its proper divisors (592963069).

11123011331 is a wasteful number, since it uses less digits than its factorization.

11123011331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377089.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 11123011331 its reverse (13311032111), we get a palindrome (24434043442).

The spelling of 11123011331 in words is "eleven billion, one hundred twenty-three million, eleven thousand, three hundred thirty-one".