346642243 has 4 divisors (see below), whose sum is σ = 347641560. Its totient is φ = 345642928.

The previous prime is 346642237. The next prime is 346642319. The reversal of 346642243 is 342246643.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 342246643 = 257 ⋅1331699.

It is a cyclic number.

It is not a de Polignac number, because 346642243 - 2⁵ = 346642211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 346642199 and 346642208.

It is not an unprimeable number, because it can be changed into a prime (346642643) 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, 499138 + ... + 499831.

It is an arithmetic number, because the mean of its divisors is an integer number (86910390).

Almost surely, 2^346642243 is an apocalyptic number.

346642243 is a deficient number, since it is larger than the sum of its proper divisors (999317).

346642243 is an equidigital number, since it uses as much as digits as its factorization.

346642243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999316.

The product of its digits is 82944, while the sum is 34.

The square root of 346642243 is about 18618.3308328110. The cubic root of 346642243 is about 702.4689975891.

Adding to 346642243 its reverse (342246643), we get a palindrome (688888886).

The spelling of 346642243 in words is "three hundred forty-six million, six hundred forty-two thousand, two hundred forty-three".