673128443831 has 2 divisors, whose sum is σ = 673128443832. Its totient is φ = 673128443830.

The previous prime is 673128443759. The next prime is 673128443837. The reversal of 673128443831 is 138344821376.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 673128443831 - 2²² = 673124249527 is a prime.

It is a super-3 number, since 3×673128443831³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 673128443831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673128443837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336564221915 + 336564221916.

It is an arithmetic number, because the mean of its divisors is an integer number (336564221916).

Almost surely, 2^673128443831 is an apocalyptic number.

673128443831 is a deficient number, since it is larger than the sum of its proper divisors (1).

673128443831 is an equidigital number, since it uses as much as digits as its factorization.

673128443831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2322432, while the sum is 50.

The spelling of 673128443831 in words is "six hundred seventy-three billion, one hundred twenty-eight million, four hundred forty-three thousand, eight hundred thirty-one".