671903231 has 2 divisors, whose sum is σ = 671903232. Its totient is φ = 671903230.

The previous prime is 671903173. The next prime is 671903261. The reversal of 671903231 is 132309176.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 671903231 - 2²² = 667708927 is a prime.

It is a super-3 number, since 3×671903231³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671903261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335951615 + 335951616.

It is an arithmetic number, because the mean of its divisors is an integer number (335951616).

Almost surely, 2^671903231 is an apocalyptic number.

671903231 is a deficient number, since it is larger than the sum of its proper divisors (1).

671903231 is an equidigital number, since it uses as much as digits as its factorization.

671903231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 671903231 is about 25921.0962538238. The cubic root of 671903231 is about 875.8617821411.

The spelling of 671903231 in words is "six hundred seventy-one million, nine hundred three thousand, two hundred thirty-one".