133831974 has 8 divisors (see below), whose sum is σ = 267663960. Its totient is φ = 44610656.

The previous prime is 133831937. The next prime is 133832003. The reversal of 133831974 is 479138331.

It is a happy number.

133831974 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

133831974 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11152659 + ... + 11152670.

It is an arithmetic number, because the mean of its divisors is an integer number (33457995).

Almost surely, 2^133831974 is an apocalyptic number.

133831974 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133831974 is a wasteful number, since it uses less digits than its factorization.

133831974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22305334.

The product of its digits is 54432, while the sum is 39.

The square root of 133831974 is about 11568.5770084311. The cubic root of 133831974 is about 511.5090177469.

The spelling of 133831974 in words is "one hundred thirty-three million, eight hundred thirty-one thousand, nine hundred seventy-four".