1631241061 has 2 divisors, whose sum is σ = 1631241062. Its totient is φ = 1631241060.

The previous prime is 1631241041. The next prime is 1631241083. The reversal of 1631241061 is 1601421361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1225420036 + 405821025 = 35006^2 + 20145^2 .

It is a cyclic number.

It is not a de Polignac number, because 1631241061 - 2¹⁷ = 1631109989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1631241011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815620530 + 815620531.

It is an arithmetic number, because the mean of its divisors is an integer number (815620531).

Almost surely, 2^1631241061 is an apocalyptic number.

It is an amenable number.

1631241061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1631241061 is an equidigital number, since it uses as much as digits as its factorization.

1631241061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1631241061 is about 40388.6253913153. The cubic root of 1631241061 is about 1177.1705311664.

The spelling of 1631241061 in words is "one billion, six hundred thirty-one million, two hundred forty-one thousand, sixty-one".