431056589 has 2 divisors, whose sum is σ = 431056590. Its totient is φ = 431056588.

The previous prime is 431056541. The next prime is 431056603. The reversal of 431056589 is 985650134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 288660100 + 142396489 = 16990^2 + 11933^2 .

It is a cyclic number.

It is not a de Polignac number, because 431056589 - 2²⁴ = 414279373 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431056189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215528294 + 215528295.

It is an arithmetic number, because the mean of its divisors is an integer number (215528295).

Almost surely, 2^431056589 is an apocalyptic number.

It is an amenable number.

431056589 is a deficient number, since it is larger than the sum of its proper divisors (1).

431056589 is an equidigital number, since it uses as much as digits as its factorization.

431056589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 431056589 is about 20761.9023454018. The cubic root of 431056589 is about 755.4019402721.

It can be divided in two parts, 43105 and 6589, that added together give a palindrome (49694).

The spelling of 431056589 in words is "four hundred thirty-one million, fifty-six thousand, five hundred eighty-nine".