133223231231 has 8 divisors (see below), whose sum is σ = 134181359280. Its totient is φ = 132266820672.

The previous prime is 133223231221. The next prime is 133223231293. The reversal of 133223231231 is 132132322331.

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 133223231231 - 2²⁶ = 133156122367 is a prime.

It is a super-2 number, since 2×133223231231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133223231231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133223231221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273476 + ... + 584153.

It is an arithmetic number, because the mean of its divisors is an integer number (16772669910).

Almost surely, 2^133223231231 is an apocalyptic number.

133223231231 is a deficient number, since it is larger than the sum of its proper divisors (958128049).

133223231231 is an equidigital number, since it uses as much as digits as its factorization.

133223231231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858745.

The product of its digits is 3888, while the sum is 26.

Adding to 133223231231 its reverse (132132322331), we get a palindrome (265355553562).

The spelling of 133223231231 in words is "one hundred thirty-three billion, two hundred twenty-three million, two hundred thirty-one thousand, two hundred thirty-one".