345841 has 4 divisors (see below), whose sum is σ = 350784. Its totient is φ = 340900.

The previous prime is 345823. The next prime is 345853. The reversal of 345841 is 148543.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 148543 = 41 ⋅3623.

It is a cyclic number.

It is not a de Polignac number, because 345841 - 2⁹ = 345329 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345811) 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, 2365 + ... + 2506.

It is an arithmetic number, because the mean of its divisors is an integer number (87696).

2³⁴⁵⁸⁴¹ is an apocalyptic number.

It is an amenable number.

345841 is a deficient number, since it is larger than the sum of its proper divisors (4943).

345841 is an equidigital number, since it uses as much as digits as its factorization.

345841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4942.

The product of its digits is 1920, while the sum is 25.

The square root of 345841 is about 588.0824772088. The cubic root of 345841 is about 70.1927341555.

It can be divided in two parts, 3458 and 41, that multiplied together give a triangular number (141778 = T₅₃₂).

The spelling of 345841 in words is "three hundred forty-five thousand, eight hundred forty-one".