431144345 has 4 divisors (see below), whose sum is σ = 517373220. Its totient is φ = 344915472.

The previous prime is 431144321. The next prime is 431144383. The reversal of 431144345 is 543441134.

It is a happy number.

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 61889689 + 369254656 = 7867^2 + 19216^2 .

It is a cyclic number.

It is not a de Polignac number, because 431144345 - 2¹² = 431140249 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43114430 + ... + 43114439.

It is an arithmetic number, because the mean of its divisors is an integer number (129343305).

Almost surely, 2^431144345 is an apocalyptic number.

It is an amenable number.

431144345 is a deficient number, since it is larger than the sum of its proper divisors (86228875).

431144345 is an equidigital number, since it uses as much as digits as its factorization.

431144345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86228874.

The product of its digits is 11520, while the sum is 29.

The square root of 431144345 is about 20764.0156280041. The cubic root of 431144345 is about 755.4531992454.

Adding to 431144345 its reverse (543441134), we get a palindrome (974585479).

The spelling of 431144345 in words is "four hundred thirty-one million, one hundred forty-four thousand, three hundred forty-five".