345361 has 4 divisors (see below), whose sum is σ = 357300. Its totient is φ = 333424.

The previous prime is 345329. The next prime is 345379. The reversal of 345361 is 163543.

345361 is nontrivially palindromic in base 8.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 148225 + 197136 = 385^2 + 444^2 .

It is a cyclic number.

It is not a de Polignac number, because 345361 - 2⁵ = 345329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5926 + ... + 5983.

It is an arithmetic number, because the mean of its divisors is an integer number (89325).

2³⁴⁵³⁶¹ is an apocalyptic number.

It is an amenable number.

345361 is a deficient number, since it is larger than the sum of its proper divisors (11939).

345361 is a wasteful number, since it uses less digits than its factorization.

345361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11938.

The product of its digits is 1080, while the sum is 22.

The square root of 345361 is about 587.6742294843. The cubic root of 345361 is about 70.1602451292.

The spelling of 345361 in words is "three hundred forty-five thousand, three hundred sixty-one".