136430213 has 2 divisors, whose sum is σ = 136430214. Its totient is φ = 136430212.

The previous prime is 136430207. The next prime is 136430233. The reversal of 136430213 is 312034631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95687524 + 40742689 = 9782^2 + 6383^2 .

It is a cyclic number.

It is not a de Polignac number, because 136430213 - 2¹² = 136426117 is a prime.

It is a super-2 number, since 2×136430213² = 37226406038450738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136430233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68215106 + 68215107.

It is an arithmetic number, because the mean of its divisors is an integer number (68215107).

Almost surely, 2^136430213 is an apocalyptic number.

It is an amenable number.

136430213 is a deficient number, since it is larger than the sum of its proper divisors (1).

136430213 is an equidigital number, since it uses as much as digits as its factorization.

136430213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 136430213 is about 11680.3344558279. The cubic root of 136430213 is about 514.7980016553.

Adding to 136430213 its reverse (312034631), we get a palindrome (448464844).

The spelling of 136430213 in words is "one hundred thirty-six million, four hundred thirty thousand, two hundred thirteen".