31988427310097 has 2 divisors, whose sum is σ = 31988427310098. Its totient is φ = 31988427310096.

The previous prime is 31988427310079. The next prime is 31988427310117. The reversal of 31988427310097 is 79001372488913.

Together with previous prime (31988427310079) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18463383985216 + 13525043324881 = 4296904^2 + 3677641^2 .

It is a cyclic number.

It is not a de Polignac number, because 31988427310097 - 2⁸ = 31988427309841 is a prime.

It is not a weakly prime, because it can be changed into another prime (31988427310997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15994213655048 + 15994213655049.

It is an arithmetic number, because the mean of its divisors is an integer number (15994213655049).

Almost surely, 2^{31988427310097} is an apocalyptic number.

It is an amenable number.

31988427310097 is a deficient number, since it is larger than the sum of its proper divisors (1).

31988427310097 is an equidigital number, since it uses as much as digits as its factorization.

31988427310097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18289152, while the sum is 62.

The spelling of 31988427310097 in words is "thirty-one trillion, nine hundred eighty-eight billion, four hundred twenty-seven million, three hundred ten thousand, ninety-seven".