133431308149 has 2 divisors, whose sum is σ = 133431308150. Its totient is φ = 133431308148.

The previous prime is 133431308137. The next prime is 133431308167. The reversal of 133431308149 is 941803134331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127356196900 + 6075111249 = 356870^2 + 77943^2 .

It is a cyclic number.

It is not a de Polignac number, because 133431308149 - 2⁹ = 133431307637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133431308119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66715654074 + 66715654075.

It is an arithmetic number, because the mean of its divisors is an integer number (66715654075).

Almost surely, 2^133431308149 is an apocalyptic number.

It is an amenable number.

133431308149 is a deficient number, since it is larger than the sum of its proper divisors (1).

133431308149 is an equidigital number, since it uses as much as digits as its factorization.

133431308149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 40.

The spelling of 133431308149 in words is "one hundred thirty-three billion, four hundred thirty-one million, three hundred eight thousand, one hundred forty-nine".