351391 has 2 divisors, whose sum is σ = 351392. Its totient is φ = 351390.

The previous prime is 351383. The next prime is 351397. The reversal of 351391 is 193153.

It is a strong prime.

It is an emirp because it is prime and its reverse (193153) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 351391 - 2³ = 351383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (351397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175695 + 175696.

It is an arithmetic number, because the mean of its divisors is an integer number (175696).

2³⁵¹³⁹¹ is an apocalyptic number.

351391 is a deficient number, since it is larger than the sum of its proper divisors (1).

351391 is an equidigital number, since it uses as much as digits as its factorization.

351391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 405, while the sum is 22.

The square root of 351391 is about 592.7824221415. The cubic root of 351391 is about 70.5662238422.

The spelling of 351391 in words is "three hundred fifty-one thousand, three hundred ninety-one".