631108417 has 2 divisors, whose sum is σ = 631108418. Its totient is φ = 631108416.

The previous prime is 631108403. The next prime is 631108441. The reversal of 631108417 is 714801136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 622951681 + 8156736 = 24959^2 + 2856^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-631108417 is a prime.

It is not a weakly prime, because it can be changed into another prime (631100417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315554208 + 315554209.

It is an arithmetic number, because the mean of its divisors is an integer number (315554209).

Almost surely, 2^631108417 is an apocalyptic number.

It is an amenable number.

631108417 is a deficient number, since it is larger than the sum of its proper divisors (1).

631108417 is an equidigital number, since it uses as much as digits as its factorization.

631108417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 631108417 is about 25121.8712877843. The cubic root of 631108417 is about 857.7643469267.

The spelling of 631108417 in words is "six hundred thirty-one million, one hundred eight thousand, four hundred seventeen".