133301331231 has 4 divisors (see below), whose sum is σ = 177735108312. Its totient is φ = 88867554152.

The previous prime is 133301331227. The next prime is 133301331281. The reversal of 133301331231 is 132133103331.

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 133301331231 - 2² = 133301331227 is a prime.

It is a super-2 number, since 2×133301331231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133301331211) 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 3 ways as a sum of consecutive naturals, for example, 22216888536 + ... + 22216888541.

It is an arithmetic number, because the mean of its divisors is an integer number (44433777078).

Almost surely, 2^133301331231 is an apocalyptic number.

133301331231 is a deficient number, since it is larger than the sum of its proper divisors (44433777081).

133301331231 is an equidigital number, since it uses as much as digits as its factorization.

133301331231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44433777080.

The product of its (nonzero) digits is 1458, while the sum is 24.

Adding to 133301331231 its reverse (132133103331), we get a palindrome (265434434562).

The spelling of 133301331231 in words is "one hundred thirty-three billion, three hundred one million, three hundred thirty-one thousand, two hundred thirty-one".