12723019 has 2 divisors, whose sum is σ = 12723020. Its totient is φ = 12723018.

The previous prime is 12723017. The next prime is 12723031. The reversal of 12723019 is 91032721.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12723019 - 2¹ = 12723017 is a prime.

It is a super-2 number, since 2×12723019² = 323750424948722, which contains 22 as substring.

Together with 12723017, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 12722984 and 12723002.

It is not a weakly prime, because it can be changed into another prime (12723017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6361509 + 6361510.

It is an arithmetic number, because the mean of its divisors is an integer number (6361510).

Almost surely, 2^12723019 is an apocalyptic number.

12723019 is a deficient number, since it is larger than the sum of its proper divisors (1).

12723019 is an equidigital number, since it uses as much as digits as its factorization.

12723019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 12723019 is about 3566.9341176983. The cubic root of 12723019 is about 233.4515303656.

The spelling of 12723019 in words is "twelve million, seven hundred twenty-three thousand, nineteen".