351291 has 8 divisors (see below), whose sum is σ = 493120. Its totient is φ = 221832.

The previous prime is 351289. The next prime is 351293. The reversal of 351291 is 192153.

It is an interprime number because it is at equal distance from previous prime (351289) and next prime (351293).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 351291 - 2¹ = 351289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (351293) 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 7 ways as a sum of consecutive naturals, for example, 3025 + ... + 3138.

It is an arithmetic number, because the mean of its divisors is an integer number (61640).

2³⁵¹²⁹¹ is an apocalyptic number.

351291 is a deficient number, since it is larger than the sum of its proper divisors (141829).

351291 is a wasteful number, since it uses less digits than its factorization.

351291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6185.

The product of its digits is 270, while the sum is 21.

The square root of 351291 is about 592.6980681595. The cubic root of 351291 is about 70.5595292182.

It can be divided in two parts, 35 and 1291, that added together give a triangular number (1326 = T₅₁).

The spelling of 351291 in words is "three hundred fifty-one thousand, two hundred ninety-one".