381431598 has 8 divisors (see below), whose sum is σ = 762863208. Its totient is φ = 127143864.

The previous prime is 381431581. The next prime is 381431623. The reversal of 381431598 is 895134183.

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

381431598 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31785961 + ... + 31785972.

It is an arithmetic number, because the mean of its divisors is an integer number (95357901).

Almost surely, 2^381431598 is an apocalyptic number.

381431598 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.

381431598 is a wasteful number, since it uses less digits than its factorization.

381431598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63571938.

The product of its digits is 103680, while the sum is 42.

The square root of 381431598 is about 19530.2738844083. The cubic root of 381431598 is about 725.2240911722.

The spelling of 381431598 in words is "three hundred eighty-one million, four hundred thirty-one thousand, five hundred ninety-eight".