423403513 has 8 divisors (see below), whose sum is σ = 482795208. Its totient is φ = 367843584.

The previous prime is 423403511. The next prime is 423403517. The reversal of 423403513 is 315304324.

It can be written as a sum of positive squares in 4 ways, for example, as 168298729 + 255104784 = 12973^2 + 15972^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 423403513 - 2¹ = 423403511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423403511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 957706 + ... + 958147.

It is an arithmetic number, because the mean of its divisors is an integer number (60349401).

Almost surely, 2^423403513 is an apocalyptic number.

It is an amenable number.

423403513 is a deficient number, since it is larger than the sum of its proper divisors (59391695).

423403513 is a wasteful number, since it uses less digits than its factorization.

423403513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915883.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 423403513 is about 20576.7711995833. The cubic root of 423403513 is about 750.9046937483.

Adding to 423403513 its reverse (315304324), we get a palindrome (738707837).

The spelling of 423403513 in words is "four hundred twenty-three million, four hundred three thousand, five hundred thirteen".