133023871 has 2 divisors, whose sum is σ = 133023872. Its totient is φ = 133023870.

The previous prime is 133023853. The next prime is 133023887. The reversal of 133023871 is 178320331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133023871 - 2¹³ = 133015679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133023271) 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 as a sum of consecutive naturals, namely, 66511935 + 66511936.

It is an arithmetic number, because the mean of its divisors is an integer number (66511936).

Almost surely, 2^133023871 is an apocalyptic number.

133023871 is a deficient number, since it is larger than the sum of its proper divisors (1).

133023871 is an equidigital number, since it uses as much as digits as its factorization.

133023871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 133023871 is about 11533.5974873411. The cubic root of 133023871 is about 510.4774089129.

The spelling of 133023871 in words is "one hundred thirty-three million, twenty-three thousand, eight hundred seventy-one".