213387269 has 2 divisors, whose sum is σ = 213387270. Its totient is φ = 213387268.

The previous prime is 213387241. The next prime is 213387283. The reversal of 213387269 is 962783312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207072100 + 6315169 = 14390^2 + 2513^2 .

It is a cyclic number.

It is not a de Polignac number, because 213387269 - 2¹² = 213383173 is a prime.

It is a super-2 number, since 2×213387269² = 91068253142556722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213387289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106693634 + 106693635.

It is an arithmetic number, because the mean of its divisors is an integer number (106693635).

Almost surely, 2^213387269 is an apocalyptic number.

It is an amenable number.

213387269 is a deficient number, since it is larger than the sum of its proper divisors (1).

213387269 is an equidigital number, since it uses as much as digits as its factorization.

213387269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 41.

The square root of 213387269 is about 14607.7811114488. The cubic root of 213387269 is about 597.5709843713.

The spelling of 213387269 in words is "two hundred thirteen million, three hundred eighty-seven thousand, two hundred sixty-nine".