213238584441481 has 3 divisors (see below), whose sum is σ = 213238599044173. Its totient is φ = 213238569838790.

The previous prime is 213238584441479. The next prime is 213238584441503. The reversal of 213238584441481 is 184144485832312.

It is a happy number.

The square root of 213238584441481 is 14602691.

It is a perfect power (a square), and thus also a powerful number.

213238584441481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 213238584441481 - 2¹ = 213238584441479 is a prime.

It is a super-2 number, since 2×213238584441481² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213238584441401) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7301346 + ... + 21904036.

Almost surely, 2^{213238584441481} is an apocalyptic number.

213238584441481 is the 14602691-st square number.

213238584441481 is the 7301346-th centered octagonal number.

It is an amenable number.

213238584441481 is a deficient number, since it is larger than the sum of its proper divisors (14602692).

213238584441481 is an frugal number, since it uses more digits than its factorization.

213238584441481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29205382 (or 14602691 counting only the distinct ones).

The product of its digits is 23592960, while the sum is 58.

The spelling of 213238584441481 in words is "two hundred thirteen trillion, two hundred thirty-eight billion, five hundred eighty-four million, four hundred forty-one thousand, four hundred eighty-one".