285523097213 has 2 divisors, whose sum is σ = 285523097214. Its totient is φ = 285523097212.

The previous prime is 285523097179. The next prime is 285523097231. The reversal of 285523097213 is 312790325582.

Together with next prime (285523097231) 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., 182673324409 + 102849772804 = 427403^2 + 320702^2 .

It is a cyclic number.

It is not a de Polignac number, because 285523097213 - 2⁶ = 285523097149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285523097413) 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, 142761548606 + 142761548607.

It is an arithmetic number, because the mean of its divisors is an integer number (142761548607).

Almost surely, 2^285523097213 is an apocalyptic number.

It is an amenable number.

285523097213 is a deficient number, since it is larger than the sum of its proper divisors (1).

285523097213 is an equidigital number, since it uses as much as digits as its factorization.

285523097213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907200, while the sum is 47.

The spelling of 285523097213 in words is "two hundred eighty-five billion, five hundred twenty-three million, ninety-seven thousand, two hundred thirteen".