135281299 has 2 divisors, whose sum is σ = 135281300. Its totient is φ = 135281298.

The previous prime is 135281269. The next prime is 135281309. The reversal of 135281299 is 992182531.

It is a strong prime.

It is an emirp because it is prime and its reverse (992182531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135281299 - 2¹³ = 135273107 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (135281269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67640649 + 67640650.

It is an arithmetic number, because the mean of its divisors is an integer number (67640650).

Almost surely, 2^135281299 is an apocalyptic number.

135281299 is a deficient number, since it is larger than the sum of its proper divisors (1).

135281299 is an equidigital number, since it uses as much as digits as its factorization.

135281299 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 40.

The square root of 135281299 is about 11631.0489208841. The cubic root of 135281299 is about 513.3488438652.

The spelling of 135281299 in words is "one hundred thirty-five million, two hundred eighty-one thousand, two hundred ninety-nine".