213737323237393 has 2 divisors, whose sum is σ = 213737323237394. Its totient is φ = 213737323237392.

The previous prime is 213737323237367. The next prime is 213737323237481. The reversal of 213737323237393 is 393732323737312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206516644851969 + 7220678385424 = 14370687^2 + 2687132^2 .

It is a cyclic number.

It is not a de Polignac number, because 213737323237393 - 2²¹ = 213737321140241 is a prime.

It is not a weakly prime, because it can be changed into another prime (213737323237313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106868661618696 + 106868661618697.

It is an arithmetic number, because the mean of its divisors is an integer number (106868661618697).

Almost surely, 2^{213737323237393} is an apocalyptic number.

It is an amenable number.

213737323237393 is a deficient number, since it is larger than the sum of its proper divisors (1).

213737323237393 is an equidigital number, since it uses as much as digits as its factorization.

213737323237393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54010152, while the sum is 58.

The spelling of 213737323237393 in words is "two hundred thirteen trillion, seven hundred thirty-seven billion, three hundred twenty-three million, two hundred thirty-seven thousand, three hundred ninety-three".