133431240342251 has 2 divisors, whose sum is σ = 133431240342252. Its totient is φ = 133431240342250.

The previous prime is 133431240342203. The next prime is 133431240342293. The reversal of 133431240342251 is 152243042134331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133431240342251 - 2⁶ = 133431240342187 is a prime.

It is not a weakly prime, because it can be changed into another prime (133431240342151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66715620171125 + 66715620171126.

It is an arithmetic number, because the mean of its divisors is an integer number (66715620171126).

Almost surely, 2^{133431240342251} is an apocalyptic number.

133431240342251 is a deficient number, since it is larger than the sum of its proper divisors (1).

133431240342251 is an equidigital number, since it uses as much as digits as its factorization.

133431240342251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 38.

Adding to 133431240342251 its reverse (152243042134331), we get a palindrome (285674282476582).

The spelling of 133431240342251 in words is "one hundred thirty-three trillion, four hundred thirty-one billion, two hundred forty million, three hundred forty-two thousand, two hundred fifty-one".