351191 has 4 divisors (see below), whose sum is σ = 352584. Its totient is φ = 349800.

The previous prime is 351179. The next prime is 351217. The reversal of 351191 is 191153.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 191153 = 23 ⋅8311.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-351191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (351121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200 + ... + 861.

It is an arithmetic number, because the mean of its divisors is an integer number (88146).

2³⁵¹¹⁹¹ is an apocalyptic number.

351191 is a deficient number, since it is larger than the sum of its proper divisors (1393).

351191 is a wasteful number, since it uses less digits than its factorization.

351191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392.

The product of its digits is 135, while the sum is 20.

The square root of 351191 is about 592.6137021703. The cubic root of 351191 is about 70.5528333236.

The spelling of 351191 in words is "three hundred fifty-one thousand, one hundred ninety-one".