31560042601 has 2 divisors, whose sum is σ = 31560042602. Its totient is φ = 31560042600.

The previous prime is 31560042589. The next prime is 31560042629. The reversal of 31560042601 is 10624006513.

It is an a-pointer prime, because the next prime (31560042629) can be obtained adding 31560042601 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23549971600 + 8010071001 = 153460^2 + 89499^2 .

It is a cyclic number.

It is not a de Polignac number, because 31560042601 - 2³³ = 22970108009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31560042601.

It is not a weakly prime, because it can be changed into another prime (31560042301) 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, 15780021300 + 15780021301.

It is an arithmetic number, because the mean of its divisors is an integer number (15780021301).

Almost surely, 2^31560042601 is an apocalyptic number.

It is an amenable number.

31560042601 is a deficient number, since it is larger than the sum of its proper divisors (1).

31560042601 is an equidigital number, since it uses as much as digits as its factorization.

31560042601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 31560042601 in words is "thirty-one billion, five hundred sixty million, forty-two thousand, six hundred one".