671240312 has 32 divisors (see below), whose sum is σ = 1278472800. Its totient is φ = 330355584.

The previous prime is 671240309. The next prime is 671240377. The reversal of 671240312 is 213042176.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134453 + ... + 139355.

It is an arithmetic number, because the mean of its divisors is an integer number (39952275).

Almost surely, 2^671240312 is an apocalyptic number.

It is an amenable number.

671240312 is a deficient number, since it is larger than the sum of its proper divisors (607232488).

671240312 is a wasteful number, since it uses less digits than its factorization.

671240312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5175 (or 5171 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 671240312 is about 25908.3058496691. The cubic root of 671240312 is about 875.5736372374.

Adding to 671240312 its reverse (213042176), we get a palindrome (884282488).

The spelling of 671240312 in words is "six hundred seventy-one million, two hundred forty thousand, three hundred twelve".