23705219 has 2 divisors, whose sum is σ = 23705220. Its totient is φ = 23705218.

The previous prime is 23705189. The next prime is 23705233. The reversal of 23705219 is 91250732.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23705219 - 2¹⁶ = 23639683 is a prime.

It is a super-2 number, since 2×23705219² = 1123874815675922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 23705191 and 23705200.

It is not a weakly prime, because it can be changed into another prime (23705119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11852609 + 11852610.

It is an arithmetic number, because the mean of its divisors is an integer number (11852610).

Almost surely, 2^23705219 is an apocalyptic number.

23705219 is a deficient number, since it is larger than the sum of its proper divisors (1).

23705219 is an equidigital number, since it uses as much as digits as its factorization.

23705219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 23705219 is about 4868.8005709825. The cubic root of 23705219 is about 287.2640796784.

The spelling of 23705219 in words is "twenty-three million, seven hundred five thousand, two hundred nineteen".