381716347 has 4 divisors (see below), whose sum is σ = 382237840. Its totient is φ = 381194856.

The previous prime is 381716341. The next prime is 381716389. The reversal of 381716347 is 743617183.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 381716347 - 2¹⁵ = 381683579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381716341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259647 + ... + 261112.

It is an arithmetic number, because the mean of its divisors is an integer number (95559460).

Almost surely, 2^381716347 is an apocalyptic number.

381716347 is a deficient number, since it is larger than the sum of its proper divisors (521493).

381716347 is an equidigital number, since it uses as much as digits as its factorization.

381716347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521492.

The product of its digits is 84672, while the sum is 40.

The square root of 381716347 is about 19537.5624631119. The cubic root of 381716347 is about 725.4045127466.

It can be divided in two parts, 3817 and 16347, that added together give a square (20164 = 142²).

The spelling of 381716347 in words is "three hundred eighty-one million, seven hundred sixteen thousand, three hundred forty-seven".