13531331233 has 6 divisors (see below), whose sum is σ = 15740528226. Its totient is φ = 11598283872.

The previous prime is 13531331201. The next prime is 13531331257. The reversal of 13531331233 is 33213313531.

It is a happy number.

13531331233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 12443848704 + 1087482529 = 111552^2 + 32977^2 .

It is not a de Polignac number, because 13531331233 - 2⁵ = 13531331201 is a prime.

It is a super-2 number, since 2×13531331233² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13531331263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138074760 + ... + 138074857.

It is an arithmetic number, because the mean of its divisors is an integer number (2623421371).

Almost surely, 2^13531331233 is an apocalyptic number.

It is an amenable number.

13531331233 is a deficient number, since it is larger than the sum of its proper divisors (2209196993).

13531331233 is an equidigital number, since it uses as much as digits as its factorization.

13531331233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276149631 (or 276149624 counting only the distinct ones).

The product of its digits is 7290, while the sum is 28.

Adding to 13531331233 its reverse (33213313531), we get a palindrome (46744644764).

The spelling of 13531331233 in words is "thirteen billion, five hundred thirty-one million, three hundred thirty-one thousand, two hundred thirty-three".