12320057 has 2 divisors, whose sum is σ = 12320058. Its totient is φ = 12320056.

The previous prime is 12320047. The next prime is 12320071. The reversal of 12320057 is 75002321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11162281 + 1157776 = 3341^2 + 1076^2 .

It is an emirp because it is prime and its reverse (75002321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12320057 - 2¹⁴ = 12303673 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12320017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160028 + 6160029.

It is an arithmetic number, because the mean of its divisors is an integer number (6160029).

Almost surely, 2^12320057 is an apocalyptic number.

It is an amenable number.

12320057 is a deficient number, since it is larger than the sum of its proper divisors (1).

12320057 is an equidigital number, since it uses as much as digits as its factorization.

12320057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 12320057 is about 3509.9938746385. The cubic root of 12320057 is about 230.9604262462.

Adding to 12320057 its reverse (75002321), we get a palindrome (87322378).

The spelling of 12320057 in words is "twelve million, three hundred twenty thousand, fifty-seven".