135481263 has 8 divisors (see below), whose sum is σ = 180874368. Its totient is φ = 90204504.

The previous prime is 135481259. The next prime is 135481289. The reversal of 135481263 is 362184531.

135481263 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135481263 - 2² = 135481259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135481363) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26331 + ... + 31052.

It is an arithmetic number, because the mean of its divisors is an integer number (22609296).

Almost surely, 2^135481263 is an apocalyptic number.

135481263 is a deficient number, since it is larger than the sum of its proper divisors (45393105).

135481263 is an equidigital number, since it uses as much as digits as its factorization.

135481263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58173.

The product of its digits is 17280, while the sum is 33.

The square root of 135481263 is about 11639.6418759342. The cubic root of 135481263 is about 513.6016522799.

The spelling of 135481263 in words is "one hundred thirty-five million, four hundred eighty-one thousand, two hundred sixty-three".