431728573 has 2 divisors, whose sum is σ = 431728574. Its totient is φ = 431728572.

The previous prime is 431728571. The next prime is 431728589. The reversal of 431728573 is 375827134.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 382476249 + 49252324 = 19557^2 + 7018^2 .

It is a cyclic number.

It is not a de Polignac number, because 431728573 - 2¹ = 431728571 is a prime.

Together with 431728571, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431728571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215864286 + 215864287.

It is an arithmetic number, because the mean of its divisors is an integer number (215864287).

Almost surely, 2^431728573 is an apocalyptic number.

It is an amenable number.

431728573 is a deficient number, since it is larger than the sum of its proper divisors (1).

431728573 is an equidigital number, since it uses as much as digits as its factorization.

431728573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 40.

The square root of 431728573 is about 20778.0791460616. The cubic root of 431728573 is about 755.7942742714.

The spelling of 431728573 in words is "four hundred thirty-one million, seven hundred twenty-eight thousand, five hundred seventy-three".