31056447601 has 2 divisors, whose sum is σ = 31056447602. Its totient is φ = 31056447600.

The previous prime is 31056447599. The next prime is 31056447661. The reversal of 31056447601 is 10674465013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31019663376 + 36784225 = 176124^2 + 6065^2 .

It is an emirp because it is prime and its reverse (10674465013) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31056447601 - 2¹ = 31056447599 is a prime.

Together with 31056447599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (31056447661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15528223800 + 15528223801.

It is an arithmetic number, because the mean of its divisors is an integer number (15528223801).

Almost surely, 2^31056447601 is an apocalyptic number.

It is an amenable number.

31056447601 is a deficient number, since it is larger than the sum of its proper divisors (1).

31056447601 is an equidigital number, since it uses as much as digits as its factorization.

31056447601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 31056447601 in words is "thirty-one billion, fifty-six million, four hundred forty-seven thousand, six hundred one".