213424277 has 12 divisors (see below), whose sum is σ = 235462668. Its totient is φ = 193300800.

The previous prime is 213424261. The next prime is 213424297. The reversal of 213424277 is 772424312.

It can be written as a sum of positive squares in 2 ways, for example, as 184253476 + 29170801 = 13574^2 + 5401^2 .

It is not a de Polignac number, because 213424277 - 2⁴ = 213424261 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 (213424297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30863 + ... + 37139.

It is an arithmetic number, because the mean of its divisors is an integer number (19621889).

Almost surely, 2^213424277 is an apocalyptic number.

It is an amenable number.

213424277 is a deficient number, since it is larger than the sum of its proper divisors (22038391).

213424277 is a wasteful number, since it uses less digits than its factorization.

213424277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6580 (or 6569 counting only the distinct ones).

The product of its digits is 18816, while the sum is 32.

The square root of 213424277 is about 14609.0477786884. The cubic root of 213424277 is about 597.6055281826.

Adding to 213424277 its reverse (772424312), we get a palindrome (985848589).

The spelling of 213424277 in words is "two hundred thirteen million, four hundred twenty-four thousand, two hundred seventy-seven".