133914971 has 4 divisors (see below), whose sum is σ = 133965744. Its totient is φ = 133864200.

The previous prime is 133914961. The next prime is 133915003. The reversal of 133914971 is 179419331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133914971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133914931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21200 + ... + 26781.

It is an arithmetic number, because the mean of its divisors is an integer number (33491436).

Almost surely, 2^133914971 is an apocalyptic number.

133914971 is a deficient number, since it is larger than the sum of its proper divisors (50773).

133914971 is an equidigital number, since it uses as much as digits as its factorization.

133914971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50772.

The product of its digits is 20412, while the sum is 38.

The square root of 133914971 is about 11572.1636265653. The cubic root of 133914971 is about 511.6147347383.

The spelling of 133914971 in words is "one hundred thirty-three million, nine hundred fourteen thousand, nine hundred seventy-one".