431626313 has 4 divisors (see below), whose sum is σ = 431670528. Its totient is φ = 431582100.

The previous prime is 431626291. The next prime is 431626319. The reversal of 431626313 is 313626134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 431626313 - 2¹⁰ = 431625289 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (431626319) 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, 281 + ... + 29382.

It is an arithmetic number, because the mean of its divisors is an integer number (107917632).

Almost surely, 2^431626313 is an apocalyptic number.

It is an amenable number.

431626313 is a deficient number, since it is larger than the sum of its proper divisors (44215).

431626313 is a wasteful number, since it uses less digits than its factorization.

431626313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44214.

The product of its digits is 7776, while the sum is 29.

The square root of 431626313 is about 20775.6182338818. The cubic root of 431626313 is about 755.7345966327.

The spelling of 431626313 in words is "four hundred thirty-one million, six hundred twenty-six thousand, three hundred thirteen".