213859503523 has 2 divisors, whose sum is σ = 213859503524. Its totient is φ = 213859503522.

The previous prime is 213859503521. The next prime is 213859503629. The reversal of 213859503523 is 325305958312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213859503523 - 2¹ = 213859503521 is a prime.

Together with 213859503521, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (213859503521) 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, 106929751761 + 106929751762.

It is an arithmetic number, because the mean of its divisors is an integer number (106929751762).

Almost surely, 2^213859503523 is an apocalyptic number.

213859503523 is a deficient number, since it is larger than the sum of its proper divisors (1).

213859503523 is an equidigital number, since it uses as much as digits as its factorization.

213859503523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972000, while the sum is 46.

The spelling of 213859503523 in words is "two hundred thirteen billion, eight hundred fifty-nine million, five hundred three thousand, five hundred twenty-three".