133305231247 has 8 divisors (see below), whose sum is σ = 141152576400. Its totient is φ = 125458537344.

The previous prime is 133305231229. The next prime is 133305231253. The reversal of 133305231247 is 742132503331.

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 133305231247 - 2⁷ = 133305231119 is a prime.

It is a super-2 number, since 2×133305231247² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133305231347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295504 + ... + 594922.

It is an arithmetic number, because the mean of its divisors is an integer number (17644072050).

Almost surely, 2^133305231247 is an apocalyptic number.

133305231247 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

133305231247 is a deficient number, since it is larger than the sum of its proper divisors (7847345153).

133305231247 is a wasteful number, since it uses less digits than its factorization.

133305231247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325625.

The product of its (nonzero) digits is 45360, while the sum is 34.

Adding to 133305231247 its reverse (742132503331), we get a palindrome (875437734578).

The spelling of 133305231247 in words is "one hundred thirty-three billion, three hundred five million, two hundred thirty-one thousand, two hundred forty-seven".