423943319 has 2 divisors, whose sum is σ = 423943320. Its totient is φ = 423943318.

The previous prime is 423943313. The next prime is 423943357. The reversal of 423943319 is 913349324.

It is a happy number.

It is an a-pointer prime, because the next prime (423943357) can be obtained adding 423943319 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423943319 - 2¹² = 423939223 is a prime.

It is a super-2 number, since 2×423943319² = 359455875449471522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423943313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211971659 + 211971660.

It is an arithmetic number, because the mean of its divisors is an integer number (211971660).

Almost surely, 2^423943319 is an apocalyptic number.

423943319 is a deficient number, since it is larger than the sum of its proper divisors (1).

423943319 is an equidigital number, since it uses as much as digits as its factorization.

423943319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 38.

The square root of 423943319 is about 20589.8838996241. The cubic root of 423943319 is about 751.2236729321.

The spelling of 423943319 in words is "four hundred twenty-three million, nine hundred forty-three thousand, three hundred nineteen".