135320279 has 2 divisors, whose sum is σ = 135320280. Its totient is φ = 135320278.

The previous prime is 135320231. The next prime is 135320281. The reversal of 135320279 is 972023531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 135320279 - 2⁸ = 135320023 is a prime.

Together with 135320281, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135320879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67660139 + 67660140.

It is an arithmetic number, because the mean of its divisors is an integer number (67660140).

Almost surely, 2^135320279 is an apocalyptic number.

135320279 is a deficient number, since it is larger than the sum of its proper divisors (1).

135320279 is an equidigital number, since it uses as much as digits as its factorization.

135320279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 135320279 is about 11632.7244874105. The cubic root of 135320279 is about 513.3981446345.

The spelling of 135320279 in words is "one hundred thirty-five million, three hundred twenty thousand, two hundred seventy-nine".