428631601 has 2 divisors, whose sum is σ = 428631602. Its totient is φ = 428631600.

The previous prime is 428631563. The next prime is 428631613. The reversal of 428631601 is 106136824.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 274896400 + 153735201 = 16580^2 + 12399^2 .

It is a cyclic number.

It is not a de Polignac number, because 428631601 - 2¹⁷ = 428500529 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (428631631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214315800 + 214315801.

It is an arithmetic number, because the mean of its divisors is an integer number (214315801).

Almost surely, 2^428631601 is an apocalyptic number.

It is an amenable number.

428631601 is a deficient number, since it is larger than the sum of its proper divisors (1).

428631601 is an equidigital number, since it uses as much as digits as its factorization.

428631601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 428631601 is about 20703.4200314827. The cubic root of 428631601 is about 753.9827248046.

The spelling of 428631601 in words is "four hundred twenty-eight million, six hundred thirty-one thousand, six hundred one".