423435503 has 2 divisors, whose sum is σ = 423435504. Its totient is φ = 423435502.

The previous prime is 423435499. The next prime is 423435517. The reversal of 423435503 is 305534324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423435503 - 2² = 423435499 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423435553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211717751 + 211717752.

It is an arithmetic number, because the mean of its divisors is an integer number (211717752).

Almost surely, 2^423435503 is an apocalyptic number.

423435503 is a deficient number, since it is larger than the sum of its proper divisors (1).

423435503 is an equidigital number, since it uses as much as digits as its factorization.

423435503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 29.

The square root of 423435503 is about 20577.5485177414. The cubic root of 423435503 is about 750.9236046575.

Adding to 423435503 its reverse (305534324), we get a palindrome (728969827).

The spelling of 423435503 in words is "four hundred twenty-three million, four hundred thirty-five thousand, five hundred three".