133451871 has 16 divisors (see below), whose sum is σ = 204578304. Its totient is φ = 75799584.

The previous prime is 133451867. The next prime is 133451893. The reversal of 133451871 is 178154331.

It is not a de Polignac number, because 133451871 - 2² = 133451867 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133451821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15520 + ... + 22533.

It is an arithmetic number, because the mean of its divisors is an integer number (12786144).

Almost surely, 2^133451871 is an apocalyptic number.

133451871 is a deficient number, since it is larger than the sum of its proper divisors (71126433).

133451871 is a wasteful number, since it uses less digits than its factorization.

133451871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38230.

The product of its digits is 10080, while the sum is 33.

The square root of 133451871 is about 11552.1370750178. The cubic root of 133451871 is about 511.0243043065.

The spelling of 133451871 in words is "one hundred thirty-three million, four hundred fifty-one thousand, eight hundred seventy-one".