423381637 has 4 divisors (see below), whose sum is σ = 483864736. Its totient is φ = 362898540.

The previous prime is 423381599. The next prime is 423381653. The reversal of 423381637 is 736183324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423381637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 423381596 and 423381605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423381037) 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 3 ways as a sum of consecutive naturals, for example, 30241539 + ... + 30241552.

It is an arithmetic number, because the mean of its divisors is an integer number (120966184).

Almost surely, 2^423381637 is an apocalyptic number.

It is an amenable number.

423381637 is a deficient number, since it is larger than the sum of its proper divisors (60483099).

423381637 is an equidigital number, since it uses as much as digits as its factorization.

423381637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60483098.

The product of its digits is 72576, while the sum is 37.

The square root of 423381637 is about 20576.2396224383. The cubic root of 423381637 is about 750.8917611883.

The spelling of 423381637 in words is "four hundred twenty-three million, three hundred eighty-one thousand, six hundred thirty-seven".