31581707341 has 2 divisors, whose sum is σ = 31581707342. Its totient is φ = 31581707340.

The previous prime is 31581707249. The next prime is 31581707357. The reversal of 31581707341 is 14370718513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27300622441 + 4281084900 = 165229^2 + 65430^2 .

It is a cyclic number.

It is not a de Polignac number, because 31581707341 - 2⁹ = 31581706829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31581707294 and 31581707303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31581707141) 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, 15790853670 + 15790853671.

It is an arithmetic number, because the mean of its divisors is an integer number (15790853671).

Almost surely, 2^31581707341 is an apocalyptic number.

It is an amenable number.

31581707341 is a deficient number, since it is larger than the sum of its proper divisors (1).

31581707341 is an equidigital number, since it uses as much as digits as its factorization.

31581707341 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 40.

The spelling of 31581707341 in words is "thirty-one billion, five hundred eighty-one million, seven hundred seven thousand, three hundred forty-one".