31347386089 has 2 divisors, whose sum is σ = 31347386090. Its totient is φ = 31347386088.

The previous prime is 31347386071. The next prime is 31347386099. The reversal of 31347386089 is 98068374313.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29147025625 + 2200360464 = 170725^2 + 46908^2 .

It is a cyclic number.

It is not a de Polignac number, because 31347386089 - 2²¹ = 31345288937 is a prime.

It is a super-2 number, since 2×31347386089² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31347386099) 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, 15673693044 + 15673693045.

It is an arithmetic number, because the mean of its divisors is an integer number (15673693045).

Almost surely, 2^31347386089 is an apocalyptic number.

It is an amenable number.

31347386089 is a deficient number, since it is larger than the sum of its proper divisors (1).

31347386089 is an equidigital number, since it uses as much as digits as its factorization.

31347386089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 31347386089 in words is "thirty-one billion, three hundred forty-seven million, three hundred eighty-six thousand, eighty-nine".