631365841 has 2 divisors, whose sum is σ = 631365842. Its totient is φ = 631365840.

The previous prime is 631365827. The next prime is 631365853. The reversal of 631365841 is 148563136.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 614841616 + 16524225 = 24796^2 + 4065^2 .

It is a cyclic number.

It is not a de Polignac number, because 631365841 - 2¹¹ = 631363793 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 631365841.

It is not a weakly prime, because it can be changed into another prime (631362841) 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, 315682920 + 315682921.

It is an arithmetic number, because the mean of its divisors is an integer number (315682921).

Almost surely, 2^631365841 is an apocalyptic number.

It is an amenable number.

631365841 is a deficient number, since it is larger than the sum of its proper divisors (1).

631365841 is an equidigital number, since it uses as much as digits as its factorization.

631365841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 631365841 is about 25126.9942691123. The cubic root of 631365841 is about 857.8809561114.

The spelling of 631365841 in words is "six hundred thirty-one million, three hundred sixty-five thousand, eight hundred forty-one".