428456323 has 2 divisors, whose sum is σ = 428456324. Its totient is φ = 428456322.

The previous prime is 428456317. The next prime is 428456359. The reversal of 428456323 is 323654824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428456323 - 2⁵ = 428456291 is a prime.

It is equal to p_22770469 and since 428456323 and 22770469 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (428456383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214228161 + 214228162.

It is an arithmetic number, because the mean of its divisors is an integer number (214228162).

Almost surely, 2^428456323 is an apocalyptic number.

428456323 is a deficient number, since it is larger than the sum of its proper divisors (1).

428456323 is an equidigital number, since it uses as much as digits as its factorization.

428456323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 37.

The square root of 428456323 is about 20699.1865299098. The cubic root of 428456323 is about 753.8799367679.

The spelling of 428456323 in words is "four hundred twenty-eight million, four hundred fifty-six thousand, three hundred twenty-three".