671423403 has 8 divisors (see below), whose sum is σ = 1023121408. Its totient is φ = 383670504.

The previous prime is 671423369. The next prime is 671423407. The reversal of 671423403 is 304324176.

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

It is not a de Polignac number, because 671423403 - 2¹⁰ = 671422379 is a prime.

It is a super-2 number, since 2×671423403² = 901618772192200818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671423407) 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, 15986251 + ... + 15986292.

It is an arithmetic number, because the mean of its divisors is an integer number (127890176).

Almost surely, 2^671423403 is an apocalyptic number.

671423403 is a deficient number, since it is larger than the sum of its proper divisors (351698005).

671423403 is a wasteful number, since it uses less digits than its factorization.

671423403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31972553.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 671423403 is about 25911.8390509049. The cubic root of 671423403 is about 875.6532386740.

Adding to 671423403 its reverse (304324176), we get a palindrome (975747579).

The spelling of 671423403 in words is "six hundred seventy-one million, four hundred twenty-three thousand, four hundred three".