233131311321 has 8 divisors (see below), whose sum is σ = 311490689280. Its totient is φ = 155096403792.

The previous prime is 233131311317. The next prime is 233131311383. The reversal of 233131311321 is 123113131332.

233131311321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 233131311321 - 2² = 233131311317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 233131311291 and 233131311300.

It is not an unprimeable number, because it can be changed into a prime (233131311121) 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 7 ways as a sum of consecutive naturals, for example, 81115930 + ... + 81118803.

It is an arithmetic number, because the mean of its divisors is an integer number (38936336160).

Almost surely, 2^233131311321 is an apocalyptic number.

It is an amenable number.

233131311321 is a deficient number, since it is larger than the sum of its proper divisors (78359377959).

233131311321 is a wasteful number, since it uses less digits than its factorization.

233131311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162235215.

The product of its digits is 972, while the sum is 24.

Adding to 233131311321 its reverse (123113131332), we get a palindrome (356244442653).

The spelling of 233131311321 in words is "two hundred thirty-three billion, one hundred thirty-one million, three hundred eleven thousand, three hundred twenty-one".