381312047 has 8 divisors (see below), whose sum is σ = 392274000. Its totient is φ = 370384704.

The previous prime is 381312017. The next prime is 381312109. The reversal of 381312047 is 740213183.

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 381312047 - 2¹⁶ = 381246511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381312017) 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 7 ways as a sum of consecutive naturals, for example, 14579 + ... + 31227.

It is an arithmetic number, because the mean of its divisors is an integer number (49034250).

Almost surely, 2^381312047 is an apocalyptic number.

381312047 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

381312047 is a deficient number, since it is larger than the sum of its proper divisors (10961953).

381312047 is a wasteful number, since it uses less digits than its factorization.

381312047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17305.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 381312047 is about 19527.2129859845. The cubic root of 381312047 is about 725.1483149600.

The spelling of 381312047 in words is "three hundred eighty-one million, three hundred twelve thousand, forty-seven".