233131323133 has 4 divisors (see below), whose sum is σ = 233139049308. Its totient is φ = 233123596960.

The previous prime is 233131323121. The next prime is 233131323143. The reversal of 233131323133 is 331323131332.

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

It can be written as a sum of positive squares in 2 ways, for example, as 150453221689 + 82678101444 = 387883^2 + 287538^2 .

It is a cyclic number.

It is not a de Polignac number, because 233131323133 - 2⁵ = 233131323101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (233131323143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3817648 + ... + 3878233.

It is an arithmetic number, because the mean of its divisors is an integer number (58284762327).

Almost surely, 2^233131323133 is an apocalyptic number.

It is an amenable number.

233131323133 is a deficient number, since it is larger than the sum of its proper divisors (7726175).

233131323133 is an equidigital number, since it uses as much as digits as its factorization.

233131323133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7726174.

The product of its digits is 8748, while the sum is 28.

Adding to 233131323133 its reverse (331323131332), we get a palindrome (564454454465).

The spelling of 233131323133 in words is "two hundred thirty-three billion, one hundred thirty-one million, three hundred twenty-three thousand, one hundred thirty-three".