13123321133 has 8 divisors (see below), whose sum is σ = 14165452728. Its totient is φ = 12085853184.

The previous prime is 13123321093. The next prime is 13123321177. The reversal of 13123321133 is 33112332131.

It can be written as a sum of positive squares in 4 ways, for example, as 14884 + 13123306249 = 122^2 + 114557^2 .

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 13123321133 - 2¹⁴ = 13123304749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13123321099 and 13123321108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13123321433) 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, 1160060 + ... + 1171317.

It is an arithmetic number, because the mean of its divisors is an integer number (1770681591).

Almost surely, 2^13123321133 is an apocalyptic number.

13123321133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13123321133 is a deficient number, since it is larger than the sum of its proper divisors (1042131595).

13123321133 is a wasteful number, since it uses less digits than its factorization.

13123321133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331823.

The product of its digits is 972, while the sum is 23.

Adding to 13123321133 its reverse (33112332131), we get a palindrome (46235653264).

The spelling of 13123321133 in words is "thirteen billion, one hundred twenty-three million, three hundred twenty-one thousand, one hundred thirty-three".