351947 has 4 divisors (see below), whose sum is σ = 356976. Its totient is φ = 346920.

The previous prime is 351931. The next prime is 351959. The reversal of 351947 is 749153.

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 351947 - 2⁴ = 351931 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 351947.

It is not an unprimeable number, because it can be changed into a prime (351047) 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, 2408 + ... + 2549.

It is an arithmetic number, because the mean of its divisors is an integer number (89244).

2³⁵¹⁹⁴⁷ is an apocalyptic number.

351947 is a deficient number, since it is larger than the sum of its proper divisors (5029).

351947 is an equidigital number, since it uses as much as digits as its factorization.

351947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5028.

The product of its digits is 3780, while the sum is 29.

The square root of 351947 is about 593.2512115453. The cubic root of 351947 is about 70.6034228078.

The spelling of 351947 in words is "three hundred fifty-one thousand, nine hundred forty-seven".