347081385 has 32 divisors (see below), whose sum is σ = 662261760. Its totient is φ = 151766208.

The previous prime is 347081381. The next prime is 347081419. The reversal of 347081385 is 583180743.

It is not a de Polignac number, because 347081385 - 2² = 347081381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (347081381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69445 + ... + 74274.

It is an arithmetic number, because the mean of its divisors is an integer number (20695680).

Almost surely, 2^347081385 is an apocalyptic number.

347081385 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

347081385 is a deficient number, since it is larger than the sum of its proper divisors (315180375).

347081385 is a wasteful number, since it uses less digits than its factorization.

347081385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143757.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 347081385 is about 18630.1203699815. The cubic root of 347081385 is about 702.7655121959.

The spelling of 347081385 in words is "three hundred forty-seven million, eighty-one thousand, three hundred eighty-five".