135155131 has 2 divisors, whose sum is σ = 135155132. Its totient is φ = 135155130.

The previous prime is 135155093. The next prime is 135155143. The reversal of 135155131 is 131551531.

It is a happy number.

135155131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (131551531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135155131 - 2⁷ = 135155003 is a prime.

It is a super-2 number, since 2×135155131² = 36533818871254322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 135155096 and 135155105.

It is not a weakly prime, because it can be changed into another prime (135155161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67577565 + 67577566.

It is an arithmetic number, because the mean of its divisors is an integer number (67577566).

Almost surely, 2^135155131 is an apocalyptic number.

135155131 is a deficient number, since it is larger than the sum of its proper divisors (1).

135155131 is an equidigital number, since it uses as much as digits as its factorization.

135155131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1125, while the sum is 25.

The square root of 135155131 is about 11625.6238972367. The cubic root of 135155131 is about 513.1892052878.

The spelling of 135155131 in words is "one hundred thirty-five million, one hundred fifty-five thousand, one hundred thirty-one".