431344404 has 36 divisors (see below), whose sum is σ = 1091830740. Its totient is φ = 143585280.

The previous prime is 431344399. The next prime is 431344411. The reversal of 431344404 is 404443134.

It can be written as a sum of positive squares in 2 ways, for example, as 150111504 + 281232900 = 12252^2 + 16770^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19894 + ... + 35474.

Almost surely, 2^431344404 is an apocalyptic number.

It is an amenable number.

431344404 is an abundant number, since it is smaller than the sum of its proper divisors (660486336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

431344404 is a wasteful number, since it uses less digits than its factorization.

431344404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16360 (or 16355 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

The square root of 431344404 is about 20768.8325141304. The cubic root of 431344404 is about 755.5700292915.

Adding to 431344404 its reverse (404443134), we get a palindrome (835787538).

The spelling of 431344404 in words is "four hundred thirty-one million, three hundred forty-four thousand, four hundred four".