381687233 has 8 divisors (see below), whose sum is σ = 385535040. Its totient is φ = 377853840.

The previous prime is 381687209. The next prime is 381687259. The reversal of 381687233 is 332786183.

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 381687233 - 2²⁴ = 364910017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (381687263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54191 + ... + 60827.

It is an arithmetic number, because the mean of its divisors is an integer number (48191880).

Almost surely, 2^381687233 is an apocalyptic number.

It is an amenable number.

381687233 is a deficient number, since it is larger than the sum of its proper divisors (3847807).

381687233 is a wasteful number, since it uses less digits than its factorization.

381687233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7207.

The product of its digits is 145152, while the sum is 41.

The square root of 381687233 is about 19536.8173713120. The cubic root of 381687233 is about 725.3860697639.

The spelling of 381687233 in words is "three hundred eighty-one million, six hundred eighty-seven thousand, two hundred thirty-three".