343861 has 4 divisors (see below), whose sum is σ = 392992. Its totient is φ = 294732.

The previous prime is 343831. The next prime is 343891. The reversal of 343861 is 168343.

343861 is nontrivially palindromic in base 16.

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: 168343 = 7 ⋅24049.

It is an interprime number because it is at equal distance from previous prime (343831) and next prime (343891).

It is a cyclic number.

It is not a de Polignac number, because 343861 - 2⁵ = 343829 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 (343801) 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, 24555 + ... + 24568.

It is an arithmetic number, because the mean of its divisors is an integer number (98248).

2³⁴³⁸⁶¹ is an apocalyptic number.

It is an amenable number.

343861 is a deficient number, since it is larger than the sum of its proper divisors (49131).

343861 is an equidigital number, since it uses as much as digits as its factorization.

343861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49130.

The product of its digits is 1728, while the sum is 25.

The square root of 343861 is about 586.3966234555. The cubic root of 343861 is about 70.0585224881.

The spelling of 343861 in words is "three hundred forty-three thousand, eight hundred sixty-one".