423081387 has 10 divisors (see below), whose sum is σ = 632010588. Its totient is φ = 282054204.

The previous prime is 423081359. The next prime is 423081401. The reversal of 423081387 is 783180324.

It is not a de Polignac number, because 423081387 - 2⁷ = 423081259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (423081287) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2611533 + ... + 2611694.

Almost surely, 2^423081387 is an apocalyptic number.

423081387 is a deficient number, since it is larger than the sum of its proper divisors (208929201).

423081387 is an equidigital number, since it uses as much as digits as its factorization.

423081387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5223239 (or 5223230 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 423081387 is about 20568.9422917174. The cubic root of 423081387 is about 750.7142156455.

The spelling of 423081387 in words is "four hundred twenty-three million, eighty-one thousand, three hundred eighty-seven".