135243337 has 2 divisors, whose sum is σ = 135243338. Its totient is φ = 135243336.

The previous prime is 135243331. The next prime is 135243371. The reversal of 135243337 is 733342531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126810121 + 8433216 = 11261^2 + 2904^2 .

It is a cyclic number.

It is not a de Polignac number, because 135243337 - 2¹¹ = 135241289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135243299 and 135243308.

It is not a weakly prime, because it can be changed into another prime (135243331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67621668 + 67621669.

It is an arithmetic number, because the mean of its divisors is an integer number (67621669).

Almost surely, 2^135243337 is an apocalyptic number.

It is an amenable number.

135243337 is a deficient number, since it is larger than the sum of its proper divisors (1).

135243337 is an equidigital number, since it uses as much as digits as its factorization.

135243337 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 31.

The square root of 135243337 is about 11629.4168813402. The cubic root of 135243337 is about 513.3008215293.

Adding to 135243337 its reverse (733342531), we get a palindrome (868585868).

It can be divided in two parts, 13524 and 3337, that added together give a palindrome (16861).

The spelling of 135243337 in words is "one hundred thirty-five million, two hundred forty-three thousand, three hundred thirty-seven".