213248881 has 2 divisors, whose sum is σ = 213248882. Its totient is φ = 213248880.

The previous prime is 213248851. The next prime is 213248891. The reversal of 213248881 is 188842312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176464656 + 36784225 = 13284^2 + 6065^2 .

It is a cyclic number.

It is not a de Polignac number, because 213248881 - 2¹⁷ = 213117809 is a prime.

It is a super-2 number, since 2×213248881² = 90950170495504322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213248881.

It is not a weakly prime, because it can be changed into another prime (213248821) 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, 106624440 + 106624441.

It is an arithmetic number, because the mean of its divisors is an integer number (106624441).

Almost surely, 2^213248881 is an apocalyptic number.

It is an amenable number.

213248881 is a deficient number, since it is larger than the sum of its proper divisors (1).

213248881 is an equidigital number, since it uses as much as digits as its factorization.

213248881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24576, while the sum is 37.

The square root of 213248881 is about 14603.0435526297. The cubic root of 213248881 is about 597.4417755744.

The spelling of 213248881 in words is "two hundred thirteen million, two hundred forty-eight thousand, eight hundred eighty-one".