31665317343337 has 2 divisors, whose sum is σ = 31665317343338. Its totient is φ = 31665317343336.

The previous prime is 31665317343263. The next prime is 31665317343353. The reversal of 31665317343337 is 73334371356613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28341025729641 + 3324291613696 = 5323629^2 + 1823264^2 .

It is a cyclic number.

It is not a de Polignac number, because 31665317343337 - 2¹⁹ = 31665316819049 is a prime.

It is not a weakly prime, because it can be changed into another prime (31665317343437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15832658671668 + 15832658671669.

It is an arithmetic number, because the mean of its divisors is an integer number (15832658671669).

Almost surely, 2^{31665317343337} is an apocalyptic number.

It is an amenable number.

31665317343337 is a deficient number, since it is larger than the sum of its proper divisors (1).

31665317343337 is an equidigital number, since it uses as much as digits as its factorization.

31665317343337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25719120, while the sum is 55.

The spelling of 31665317343337 in words is "thirty-one trillion, six hundred sixty-five billion, three hundred seventeen million, three hundred forty-three thousand, three hundred thirty-seven".