135103281 has 16 divisors (see below), whose sum is σ = 190616640. Its totient is φ = 84879360.

The previous prime is 135103279. The next prime is 135103321. The reversal of 135103281 is 182301531.

It is not a de Polignac number, because 135103281 - 2¹ = 135103279 is a prime.

It is a super-2 number, since 2×135103281² = 36505793073929922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135173281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4861 + ... + 17141.

It is an arithmetic number, because the mean of its divisors is an integer number (11913540).

Almost surely, 2^135103281 is an apocalyptic number.

It is an amenable number.

135103281 is a deficient number, since it is larger than the sum of its proper divisors (55513359).

135103281 is a wasteful number, since it uses less digits than its factorization.

135103281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12496.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 135103281 is about 11623.3936954747. The cubic root of 135103281 is about 513.1235714158.

The spelling of 135103281 in words is "one hundred thirty-five million, one hundred three thousand, two hundred eighty-one".