423600381 has 16 divisors (see below), whose sum is σ = 627934720. Its totient is φ = 282229920.

The previous prime is 423600367. The next prime is 423600391. The reversal of 423600381 is 183006324.

It is a happy number.

423600381 is a `hidden beast` number, since 4 + 23 + 600 + 38 + 1 = 666.

It is not a de Polignac number, because 423600381 - 2⁷ = 423600253 is a prime.

It is a super-2 number, since 2×423600381² = 358874565566690322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423600391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54201 + ... + 61521.

It is an arithmetic number, because the mean of its divisors is an integer number (39245920).

Almost surely, 2^423600381 is an apocalyptic number.

It is an amenable number.

423600381 is a deficient number, since it is larger than the sum of its proper divisors (204334339).

423600381 is a wasteful number, since it uses less digits than its factorization.

423600381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9473 (or 9467 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 423600381 is about 20581.5543873635. The cubic root of 423600381 is about 751.0210572919.

The spelling of 423600381 in words is "four hundred twenty-three million, six hundred thousand, three hundred eighty-one".