12320353 has 4 divisors (see below), whose sum is σ = 12522388. Its totient is φ = 12118320.
The previous prime is 12320351. The next prime is 12320369. The reversal of 12320353 is 35302321.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35302321 = 1151 ⋅30671.
It can be written as a sum of positive squares in 2 ways, for example, as 1607824 + 10712529 = 1268^2 + 3273^2 .
It is a cyclic number.
It is not a de Polignac number, because 12320353 - 21 = 12320351 is a prime.
It is a Duffinian number.
It is a self number, because there is not a number n which added to its sum of digits gives 12320353.
It is not an unprimeable number, because it can be changed into a prime (12320351) 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, 100926 + ... + 101047.
It is an arithmetic number, because the mean of its divisors is an integer number (3130597).
Almost surely, 212320353 is an apocalyptic number.
It is an amenable number.
12320353 is a deficient number, since it is larger than the sum of its proper divisors (202035).
12320353 is an equidigital number, since it uses as much as digits as its factorization.
12320353 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 202034.
The product of its (nonzero) digits is 540, while the sum is 19.
The square root of 12320353 is about 3510.0360397010. The cubic root of 12320353 is about 230.9622759059.
Adding to 12320353 its reverse (35302321), we get a palindrome (47622674).
It can be divided in two parts, 123203 and 53, that added together give a triangular number (123256 = T496).
The spelling of 12320353 in words is "twelve million, three hundred twenty thousand, three hundred fifty-three".
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