671306423 has 8 divisors (see below), whose sum is σ = 706917120. Its totient is φ = 635723640.

The previous prime is 671306399. The next prime is 671306431. The reversal of 671306423 is 324603176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671306423 is a prime.

It is a super-2 number, since 2×671306423² = 901304627122109858, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 671306423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671306443) 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 7 ways as a sum of consecutive naturals, for example, 57986 + ... + 68592.

It is an arithmetic number, because the mean of its divisors is an integer number (88364640).

Almost surely, 2^671306423 is an apocalyptic number.

671306423 is a deficient number, since it is larger than the sum of its proper divisors (35610697).

671306423 is a wasteful number, since it uses less digits than its factorization.

671306423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13957.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 671306423 is about 25909.5816832306. The cubic root of 671306423 is about 875.6023816117.

Adding to 671306423 its reverse (324603176), we get a palindrome (995909599).

The spelling of 671306423 in words is "six hundred seventy-one million, three hundred six thousand, four hundred twenty-three".