Adding to 2345 its reverse (5432), we get a palindrome (7777).
2345 is nontrivially palindromic in base 16.
2345 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is an alternating number because its digits alternate between even and odd.
It is a Duffinian number.
2345 is an undulating number in base 16.
It is a Curzon number.
It is a straight-line number, since its digits are in arithmetic progression.
It is a plaindrome in base 10.
It is a nialpdrome in base 15.
22345 is an apocalyptic number.
It is an amenable number.
2345 is an equidigital number, since it uses as much as digits as its factorization.
2345 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 79.
The square root of 2345 is about 48.4252000512. The cubic root of 2345 is about 13.2855931586.
The spelling of 2345 in words is "two thousand, three hundred forty-five".