671251223 has 2 divisors, whose sum is σ = 671251224. Its totient is φ = 671251222.

The previous prime is 671251193. The next prime is 671251271. The reversal of 671251223 is 322152176.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 671251223 - 2¹⁰ = 671250199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671251123) 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 as a sum of consecutive naturals, namely, 335625611 + 335625612.

It is an arithmetic number, because the mean of its divisors is an integer number (335625612).

Almost surely, 2^671251223 is an apocalyptic number.

671251223 is a deficient number, since it is larger than the sum of its proper divisors (1).

671251223 is an equidigital number, since it uses as much as digits as its factorization.

671251223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 29.

The square root of 671251223 is about 25908.5164183517. The cubic root of 671251223 is about 875.5783813566.

The spelling of 671251223 in words is "six hundred seventy-one million, two hundred fifty-one thousand, two hundred twenty-three".