12923081 has 2 divisors, whose sum is σ = 12923082. Its totient is φ = 12923080.

The previous prime is 12923047. The next prime is 12923083. The reversal of 12923081 is 18032921.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12538681 + 384400 = 3541^2 + 620^2 .

It is an emirp because it is prime and its reverse (18032921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12923081 - 2¹⁴ = 12906697 is a prime.

It is a super-2 number, since 2×12923081² = 334012045065122, which contains 22 as substring.

Together with 12923083, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12923081.

It is not a weakly prime, because it can be changed into another prime (12923083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6461540 + 6461541.

It is an arithmetic number, because the mean of its divisors is an integer number (6461541).

Almost surely, 2^12923081 is an apocalyptic number.

It is an amenable number.

12923081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12923081 is an equidigital number, since it uses as much as digits as its factorization.

12923081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 12923081 is about 3594.8687041393. The cubic root of 12923081 is about 234.6688015886.

The spelling of 12923081 in words is "twelve million, nine hundred twenty-three thousand, eighty-one".