135312139 has 2 divisors, whose sum is σ = 135312140. Its totient is φ = 135312138.

The previous prime is 135312113. The next prime is 135312181. The reversal of 135312139 is 931213531.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135312139 - 2¹⁵ = 135279371 is a prime.

It is not a weakly prime, because it can be changed into another prime (135315139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67656069 + 67656070.

It is an arithmetic number, because the mean of its divisors is an integer number (67656070).

Almost surely, 2^135312139 is an apocalyptic number.

135312139 is a deficient number, since it is larger than the sum of its proper divisors (1).

135312139 is an equidigital number, since it uses as much as digits as its factorization.

135312139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2430, while the sum is 28.

The square root of 135312139 is about 11632.3746071041. The cubic root of 135312139 is about 513.3878501816.

The spelling of 135312139 in words is "one hundred thirty-five million, three hundred twelve thousand, one hundred thirty-nine".