133154197 has 8 divisors (see below), whose sum is σ = 145629792. Its totient is φ = 120740400.

The previous prime is 133154191. The next prime is 133154213. The reversal of 133154197 is 791451331.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 133154197 - 2⁷ = 133154069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133154191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10879 + ... + 19612.

It is an arithmetic number, because the mean of its divisors is an integer number (18203724).

Almost surely, 2^133154197 is an apocalyptic number.

It is an amenable number.

133154197 is a deficient number, since it is larger than the sum of its proper divisors (12475595).

133154197 is a wasteful number, since it uses less digits than its factorization.

133154197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30899.

The product of its digits is 11340, while the sum is 34.

The square root of 133154197 is about 11539.2459459013. The cubic root of 133154197 is about 510.6440626212.

The spelling of 133154197 in words is "one hundred thirty-three million, one hundred fifty-four thousand, one hundred ninety-seven".