428078311 has 2 divisors, whose sum is σ = 428078312. Its totient is φ = 428078310.

The previous prime is 428078279. The next prime is 428078333. The reversal of 428078311 is 113870824.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428078311 - 2⁵ = 428078279 is a prime.

It is a super-2 number, since 2×428078311² = 366502080697225442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428078111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214039155 + 214039156.

It is an arithmetic number, because the mean of its divisors is an integer number (214039156).

Almost surely, 2^428078311 is an apocalyptic number.

428078311 is a deficient number, since it is larger than the sum of its proper divisors (1).

428078311 is an equidigital number, since it uses as much as digits as its factorization.

428078311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 428078311 is about 20690.0534315405. The cubic root of 428078311 is about 753.6581642507.

The spelling of 428078311 in words is "four hundred twenty-eight million, seventy-eight thousand, three hundred eleven".