423731673 has 24 divisors (see below), whose sum is σ = 666494400. Its totient is φ = 258388704.

The previous prime is 423731657. The next prime is 423731689. The reversal of 423731673 is 376137324.

423731673 is a `hidden beast` number, since 423 + 73 + 167 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (423731657) and next prime (423731689).

It is not a de Polignac number, because 423731673 - 2⁴ = 423731657 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (423731603) 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 in 23 ways as a sum of consecutive naturals, for example, 37765 + ... + 47682.

It is an arithmetic number, because the mean of its divisors is an integer number (27770600).

Almost surely, 2^423731673 is an apocalyptic number.

It is an amenable number.

423731673 is a deficient number, since it is larger than the sum of its proper divisors (242762727).

423731673 is a wasteful number, since it uses less digits than its factorization.

423731673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85501 (or 85498 counting only the distinct ones).

The product of its digits is 63504, while the sum is 36.

The square root of 423731673 is about 20584.7436952710. The cubic root of 423731673 is about 751.0986405328.

Adding to 423731673 its reverse (376137324), we get a palindrome (799868997).

The spelling of 423731673 in words is "four hundred twenty-three million, seven hundred thirty-one thousand, six hundred seventy-three".