135707531 has 2 divisors, whose sum is σ = 135707532. Its totient is φ = 135707530.

The previous prime is 135707513. The next prime is 135707569.

135707531 is nontrivially palindromic in base 10.

135707531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (135707513) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 135707531 - 2¹⁰ = 135706507 is a prime.

It is a super-2 number, since 2×135707531² = 36833067940231922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (135707431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67853765 + 67853766.

It is an arithmetic number, because the mean of its divisors is an integer number (67853766).

Almost surely, 2^135707531 is an apocalyptic number.

135707531 is a deficient number, since it is larger than the sum of its proper divisors (1).

135707531 is an equidigital number, since it uses as much as digits as its factorization.

135707531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11025, while the sum is 32.

The square root of 135707531 is about 11649.3575359330. The cubic root of 135707531 is about 513.8874162319.

The spelling of 135707531 in words is "one hundred thirty-five million, seven hundred seven thousand, five hundred thirty-one".