136232281 has 2 divisors, whose sum is σ = 136232282. Its totient is φ = 136232280.

The previous prime is 136232267. The next prime is 136232287. The reversal of 136232281 is 182232631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124121881 + 12110400 = 11141^2 + 3480^2 .

It is a cyclic number.

It is not a de Polignac number, because 136232281 - 2⁹ = 136231769 is a prime.

It is a super-2 number, since 2×136232281² = 37118468772925922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (136232287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68116140 + 68116141.

It is an arithmetic number, because the mean of its divisors is an integer number (68116141).

Almost surely, 2^136232281 is an apocalyptic number.

It is an amenable number.

136232281 is a deficient number, since it is larger than the sum of its proper divisors (1).

136232281 is an equidigital number, since it uses as much as digits as its factorization.

136232281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 28.

The square root of 136232281 is about 11671.8585066818. The cubic root of 136232281 is about 514.5489260492.

The spelling of 136232281 in words is "one hundred thirty-six million, two hundred thirty-two thousand, two hundred eighty-one".