431167609 has 2 divisors, whose sum is σ = 431167610. Its totient is φ = 431167608.

The previous prime is 431167553. The next prime is 431167669. The reversal of 431167609 is 906761134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 422919225 + 8248384 = 20565^2 + 2872^2 .

It is a cyclic number.

It is not a de Polignac number, because 431167609 - 2¹¹ = 431165561 is a prime.

It is not a weakly prime, because it can be changed into another prime (431167669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215583804 + 215583805.

It is an arithmetic number, because the mean of its divisors is an integer number (215583805).

Almost surely, 2^431167609 is an apocalyptic number.

It is an amenable number.

431167609 is a deficient number, since it is larger than the sum of its proper divisors (1).

431167609 is an equidigital number, since it uses as much as digits as its factorization.

431167609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 431167609 is about 20764.5758203725. The cubic root of 431167609 is about 755.4667867653.

The spelling of 431167609 in words is "four hundred thirty-one million, one hundred sixty-seven thousand, six hundred nine".