423401513 has 4 divisors (see below), whose sum is σ = 423835860. Its totient is φ = 422967168.

The previous prime is 423401497. The next prime is 423401519. The reversal of 423401513 is 315104324.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 325549849 + 97851664 = 18043^2 + 9892^2 .

It is a cyclic number.

It is not a de Polignac number, because 423401513 - 2⁴ = 423401497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423401519) 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 in 3 ways as a sum of consecutive naturals, for example, 215708 + ... + 217661.

It is an arithmetic number, because the mean of its divisors is an integer number (105958965).

Almost surely, 2^423401513 is an apocalyptic number.

It is an amenable number.

423401513 is a deficient number, since it is larger than the sum of its proper divisors (434347).

423401513 is an equidigital number, since it uses as much as digits as its factorization.

423401513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434346.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 423401513 is about 20576.7226010363. The cubic root of 423401513 is about 750.9035114154.

Adding to 423401513 its reverse (315104324), we get a palindrome (738505837).

The spelling of 423401513 in words is "four hundred twenty-three million, four hundred one thousand, five hundred thirteen".