133334981 has 8 divisors (see below), whose sum is σ = 144125184. Its totient is φ = 122621040.

The previous prime is 133334977. The next prime is 133334983. The reversal of 133334981 is 189433331.

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

It is a cyclic number.

It is not a de Polignac number, because 133334981 - 2² = 133334977 is a prime.

It is a super-2 number, since 2×133334981² = 35556434316540722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133334983) 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, 15401 + ... + 22446.

It is an arithmetic number, because the mean of its divisors is an integer number (18015648).

Almost surely, 2^133334981 is an apocalyptic number.

It is an amenable number.

133334981 is a deficient number, since it is larger than the sum of its proper divisors (10790203).

133334981 is a wasteful number, since it uses less digits than its factorization.

133334981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38131.

The product of its digits is 23328, while the sum is 35.

The square root of 133334981 is about 11547.0767296316. The cubic root of 133334981 is about 510.8750592912.

The spelling of 133334981 in words is "one hundred thirty-three million, three hundred thirty-four thousand, nine hundred eighty-one".