20243219 has 2 divisors, whose sum is σ = 20243220. Its totient is φ = 20243218.

The previous prime is 20243207. The next prime is 20243233. The reversal of 20243219 is 91234202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20243219 - 2⁴ = 20243203 is a prime.

It is a super-2 number, since 2×20243219² = 819575830963922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20243194 and 20243203.

It is not a weakly prime, because it can be changed into another prime (20243269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10121609 + 10121610.

It is an arithmetic number, because the mean of its divisors is an integer number (10121610).

Almost surely, 2^20243219 is an apocalyptic number.

20243219 is a deficient number, since it is larger than the sum of its proper divisors (1).

20243219 is an equidigital number, since it uses as much as digits as its factorization.

20243219 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 23.

The square root of 20243219 is about 4499.2464924696. The cubic root of 20243219 is about 272.5376610967.

The spelling of 20243219 in words is "twenty million, two hundred forty-three thousand, two hundred nineteen".