381335903 has 16 divisors (see below), whose sum is σ = 416404800. Its totient is φ = 347116800.

The previous prime is 381335879. The next prime is 381335963. The reversal of 381335903 is 309533183.

It is not a de Polignac number, because 381335903 - 2⁶ = 381335839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381335963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 470963 + ... + 471771.

It is an arithmetic number, because the mean of its divisors is an integer number (26025300).

Almost surely, 2^381335903 is an apocalyptic number.

381335903 is a deficient number, since it is larger than the sum of its proper divisors (35068897).

381335903 is a wasteful number, since it uses less digits than its factorization.

381335903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 381335903 is about 19527.8238162884. The cubic root of 381335903 is about 725.1634371131.

The spelling of 381335903 in words is "three hundred eighty-one million, three hundred thirty-five thousand, nine hundred three".