331641677 has 2 divisors, whose sum is σ = 331641678. Its totient is φ = 331641676.

The previous prime is 331641649. The next prime is 331641683. The reversal of 331641677 is 776146133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 331640521 + 1156 = 18211^2 + 34^2 .

It is a cyclic number.

It is not a de Polignac number, because 331641677 - 2⁸ = 331641421 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 331641677.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331641647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165820838 + 165820839.

It is an arithmetic number, because the mean of its divisors is an integer number (165820839).

Almost surely, 2^331641677 is an apocalyptic number.

It is an amenable number.

331641677 is a deficient number, since it is larger than the sum of its proper divisors (1).

331641677 is an equidigital number, since it uses as much as digits as its factorization.

331641677 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 38.

The square root of 331641677 is about 18211.0317390312. The cubic root of 331641677 is about 692.1863555536.

The spelling of 331641677 in words is "three hundred thirty-one million, six hundred forty-one thousand, six hundred seventy-seven".