11231123033 has 4 divisors (see below), whose sum is σ = 12095055588. Its totient is φ = 10367190480.

The previous prime is 11231123027. The next prime is 11231123039. The reversal of 11231123033 is 33032113211.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (11231123027) and next prime (11231123039).

It can be written as a sum of positive squares in 2 ways, for example, as 7370737609 + 3860385424 = 85853^2 + 62132^2 .

It is a cyclic number.

It is not a de Polignac number, because 11231123033 - 2⁴ = 11231123017 is a prime.

It is a super-2 number, since 2×11231123033² (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 = 11231122996 and 11231123014.

It is not an unprimeable number, because it can be changed into a prime (11231123039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431966258 + ... + 431966283.

It is an arithmetic number, because the mean of its divisors is an integer number (3023763897).

Almost surely, 2^11231123033 is an apocalyptic number.

11231123033 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11231123033 is a deficient number, since it is larger than the sum of its proper divisors (863932555).

11231123033 is an equidigital number, since it uses as much as digits as its factorization.

11231123033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863932554.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 11231123033 its reverse (33032113211), we get a palindrome (44263236244).

The spelling of 11231123033 in words is "eleven billion, two hundred thirty-one million, one hundred twenty-three thousand, thirty-three".