133313303231 has 4 divisors (see below), whose sum is σ = 133362883200. Its totient is φ = 133263723264.

The previous prime is 133313303197. The next prime is 133313303281. The reversal of 133313303231 is 132303313331.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 133313303231 - 2¹⁸ = 133313041087 is a prime.

It is a super-2 number, since 2×133313303231² (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 133313303231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133313303281) 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, 24785951 + ... + 24791328.

It is an arithmetic number, because the mean of its divisors is an integer number (33340720800).

Almost surely, 2^133313303231 is an apocalyptic number.

133313303231 is a deficient number, since it is larger than the sum of its proper divisors (49579969).

133313303231 is an equidigital number, since it uses as much as digits as its factorization.

133313303231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49579968.

The product of its (nonzero) digits is 4374, while the sum is 26.

Adding to 133313303231 its reverse (132303313331), we get a palindrome (265616616562).

The spelling of 133313303231 in words is "one hundred thirty-three billion, three hundred thirteen million, three hundred three thousand, two hundred thirty-one".