2143313 has 2 divisors, whose sum is σ = 2143314.
Its totient is φ = 2143312.
The previous prime is 2143279. The next prime is 2143319. The reversal of 2143313 is 3133412.
Subtracting from 2143313 its sum of digits (17), we obtain a square (2143296 = 14642).
Adding to 2143313 its reverse (3133412), we get a palindrome (5276725).
Subtracting 2143313 from its reverse (3133412), we obtain a palindrome (990099).
It can be divided in two parts, 21 and 43313, that added together give a palindrome (43334).
It is a happy number.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 2007889 + 135424 = 1417^2 + 368^2
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-2143313 is a prime.
It is a Chen prime.
It is a junction number, because it is equal to n+sod(n) for n = 2143291 and 2143300.
It is not a weakly prime, because it can be changed into another prime (2143319) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071656 + 1071657.
It is an arithmetic number, because the mean of its divisors is an integer number (1071657).
22143313 is an apocalyptic number.
It is an amenable number.
2143313 is a deficient number, since it is larger than the sum of its proper divisors (1).
2143313 is an equidigital number, since it uses as much as digits as its factorization.
2143313 is an evil number, because the sum of its binary digits is even.
The product of its digits is 216, while the sum is 17.
The square root of 2143313 is about 1464.0058059994.
The cubic root of 2143313 is about 128.9323403780.
The spelling of 2143313 in words is "two million, one hundred forty-three thousand, three hundred thirteen".