12320356 has 12 divisors (see below), whose sum is σ = 21856492. Its totient is φ = 6075648.

The previous prime is 12320351. The next prime is 12320369. The reversal of 12320356 is 65302321.

It can be written as a sum of positive squares in 2 ways, for example, as 6937956 + 5382400 = 2634^2 + 2320^2 .

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, 20805 + ... + 21388.

Almost surely, 2^12320356 is an apocalyptic number.

It is an amenable number.

12320356 is a deficient number, since it is larger than the sum of its proper divisors (9536136).

12320356 is a wasteful number, since it uses less digits than its factorization.

12320356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42270 (or 42268 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 12320356 is about 3510.0364670470. The cubic root of 12320356 is about 230.9622946523.

Adding to 12320356 its reverse (65302321), we get a palindrome (77622677).

The spelling of 12320356 in words is "twelve million, three hundred twenty thousand, three hundred fifty-six".