213159325381 has 8 divisors (see below), whose sum is σ = 214074261720. Its totient is φ = 212245297152.

The previous prime is 213159325367. The next prime is 213159325409. The reversal of 213159325381 is 183523951312.

It can be written as a sum of positive squares in 4 ways, for example, as 10776308481 + 202383016900 = 103809^2 + 449870^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213159325381 - 2¹⁷ = 213159194309 is a prime.

It is a super-2 number, since 2×213159325381² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213159325361) 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 in 7 ways as a sum of consecutive naturals, for example, 245541 + ... + 697573.

It is an arithmetic number, because the mean of its divisors is an integer number (26759282715).

Almost surely, 2^213159325381 is an apocalyptic number.

It is an amenable number.

213159325381 is a deficient number, since it is larger than the sum of its proper divisors (914936339).

213159325381 is a wasteful number, since it uses less digits than its factorization.

213159325381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454055.

The product of its digits is 194400, while the sum is 43.

The spelling of 213159325381 in words is "two hundred thirteen billion, one hundred fifty-nine million, three hundred twenty-five thousand, three hundred eighty-one".