393381103 has 16 divisors (see below), whose sum is σ = 412450816. Its totient is φ = 374764320.

The previous prime is 393380989. The next prime is 393381119. The reversal of 393381103 is 301183393.

It is a cyclic number.

It is not a de Polignac number, because 393381103 - 2¹⁷ = 393250031 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393381133) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 641425 + ... + 642037.

It is an arithmetic number, because the mean of its divisors is an integer number (25778176).

Almost surely, 2^393381103 is an apocalyptic number.

393381103 is a deficient number, since it is larger than the sum of its proper divisors (19069713).

393381103 is a wasteful number, since it uses less digits than its factorization.

393381103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 393381103 is about 19833.8373241287. The cubic root of 393381103 is about 732.7196376462.

The spelling of 393381103 in words is "three hundred ninety-three million, three hundred eighty-one thousand, one hundred three".