213830303693 has 2 divisors, whose sum is σ = 213830303694. Its totient is φ = 213830303692.

The previous prime is 213830303639. The next prime is 213830303699. The reversal of 213830303693 is 396303038312.

Together with previous prime (213830303639) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143157803044 + 70672500649 = 378362^2 + 265843^2 .

It is a cyclic number.

It is not a de Polignac number, because 213830303693 - 2¹² = 213830299597 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213830303693.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213830303699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106915151846 + 106915151847.

It is an arithmetic number, because the mean of its divisors is an integer number (106915151847).

Almost surely, 2^213830303693 is an apocalyptic number.

It is an amenable number.

213830303693 is a deficient number, since it is larger than the sum of its proper divisors (1).

213830303693 is an equidigital number, since it uses as much as digits as its factorization.

213830303693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 209952, while the sum is 41.

The spelling of 213830303693 in words is "two hundred thirteen billion, eight hundred thirty million, three hundred three thousand, six hundred ninety-three".