347042387 has 2 divisors, whose sum is σ = 347042388. Its totient is φ = 347042386.

The previous prime is 347042383. The next prime is 347042413. The reversal of 347042387 is 783240743.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 347042387 - 2² = 347042383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 347042387.

It is not a weakly prime, because it can be changed into another prime (347042383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173521193 + 173521194.

It is an arithmetic number, because the mean of its divisors is an integer number (173521194).

Almost surely, 2^347042387 is an apocalyptic number.

347042387 is a deficient number, since it is larger than the sum of its proper divisors (1).

347042387 is an equidigital number, since it uses as much as digits as its factorization.

347042387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 38.

The square root of 347042387 is about 18629.0737021463. The cubic root of 347042387 is about 702.7391903426.

The spelling of 347042387 in words is "three hundred forty-seven million, forty-two thousand, three hundred eighty-seven".