135243833 has 2 divisors, whose sum is σ = 135243834. Its totient is φ = 135243832.

The previous prime is 135243817. The next prime is 135243839. The reversal of 135243833 is 338342531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134490409 + 753424 = 11597^2 + 868^2 .

It is an emirp because it is prime and its reverse (338342531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135243833 - 2⁴ = 135243817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135243833.

It is not a weakly prime, because it can be changed into another prime (135243839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67621916 + 67621917.

It is an arithmetic number, because the mean of its divisors is an integer number (67621917).

Almost surely, 2^135243833 is an apocalyptic number.

It is an amenable number.

135243833 is a deficient number, since it is larger than the sum of its proper divisors (1).

135243833 is an equidigital number, since it uses as much as digits as its factorization.

135243833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 32.

The square root of 135243833 is about 11629.4382065515. The cubic root of 135243833 is about 513.3014490325.

The spelling of 135243833 in words is "one hundred thirty-five million, two hundred forty-three thousand, eight hundred thirty-three".