135316481 has 4 divisors (see below), whose sum is σ = 143276292. Its totient is φ = 127356672.

The previous prime is 135316463. The next prime is 135316513. The reversal of 135316481 is 184613531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97911025 + 37405456 = 9895^2 + 6116^2 .

It is a cyclic number.

It is not a de Polignac number, because 135316481 - 2²⁶ = 68207617 is a prime.

It is a super-2 number, since 2×135316481² = 36621100060446722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (135316421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3979880 + ... + 3979913.

It is an arithmetic number, because the mean of its divisors is an integer number (35819073).

Almost surely, 2^135316481 is an apocalyptic number.

It is an amenable number.

135316481 is a deficient number, since it is larger than the sum of its proper divisors (7959811).

135316481 is an equidigital number, since it uses as much as digits as its factorization.

135316481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7959810.

The product of its digits is 8640, while the sum is 32.

The square root of 135316481 is about 11632.5612398990. The cubic root of 135316481 is about 513.3933414510.

The spelling of 135316481 in words is "one hundred thirty-five million, three hundred sixteen thousand, four hundred eighty-one".