135503531 has 2 divisors, whose sum is σ = 135503532. Its totient is φ = 135503530.

The previous prime is 135503527. The next prime is 135503551. The reversal of 135503531 is 135305531.

135503531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 135503531 - 2² = 135503527 is a prime.

It is a super-2 number, since 2×135503531² = 36722413826935922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135503531.

It is not a weakly prime, because it can be changed into another prime (135503521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67751765 + 67751766.

It is an arithmetic number, because the mean of its divisors is an integer number (67751766).

Almost surely, 2^135503531 is an apocalyptic number.

135503531 is a deficient number, since it is larger than the sum of its proper divisors (1).

135503531 is an equidigital number, since it uses as much as digits as its factorization.

135503531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3375, while the sum is 26.

The square root of 135503531 is about 11640.5983952716. The cubic root of 135503531 is about 513.6297896396.

The spelling of 135503531 in words is "one hundred thirty-five million, five hundred three thousand, five hundred thirty-one".