431424109 has 4 divisors (see below), whose sum is σ = 432581116. Its totient is φ = 430267104.

The previous prime is 431424073. The next prime is 431424121. The reversal of 431424109 is 901424134.

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 162562500 + 268861609 = 12750^2 + 16397^2 .

It is a cyclic number.

It is not a de Polignac number, because 431424109 - 2¹³ = 431415917 is a prime.

It is a super-2 number, since 2×431424109² = 372253523652887762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431424209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 577944 + ... + 578689.

It is an arithmetic number, because the mean of its divisors is an integer number (108145279).

Almost surely, 2^431424109 is an apocalyptic number.

It is an amenable number.

431424109 is a deficient number, since it is larger than the sum of its proper divisors (1157007).

431424109 is a wasteful number, since it uses less digits than its factorization.

431424109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157006.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 431424109 is about 20770.7512863642. The cubic root of 431424109 is about 755.6165651915.

The spelling of 431424109 in words is "four hundred thirty-one million, four hundred twenty-four thousand, one hundred nine".