213332461 has 4 divisors (see below), whose sum is σ = 213496992. Its totient is φ = 213167932.

The previous prime is 213332459. The next prime is 213332527. The reversal of 213332461 is 164233312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213332461 - 2¹ = 213332459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213332411) 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 3 ways as a sum of consecutive naturals, for example, 80305 + ... + 82918.

It is an arithmetic number, because the mean of its divisors is an integer number (53374248).

Almost surely, 2^213332461 is an apocalyptic number.

It is an amenable number.

213332461 is a deficient number, since it is larger than the sum of its proper divisors (164531).

213332461 is a wasteful number, since it uses less digits than its factorization.

213332461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164530.

The product of its digits is 2592, while the sum is 25.

The square root of 213332461 is about 14605.9050044836. The cubic root of 213332461 is about 597.5198184401.

Adding to 213332461 its reverse (164233312), we get a palindrome (377565773).

The spelling of 213332461 in words is "two hundred thirteen million, three hundred thirty-two thousand, four hundred sixty-one".