135283681 has 8 divisors (see below), whose sum is σ = 145877480. Its totient is φ = 124716672.

The previous prime is 135283679. The next prime is 135283699. The reversal of 135283681 is 186382531.

It can be written as a sum of positive squares in 4 ways, for example, as 43296400 + 91987281 = 6580^2 + 9591^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 135283681 - 2¹ = 135283679 is a prime.

It is a super-2 number, since 2×135283681² = 36603348689819522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135283681.

It is not an unprimeable number, because it can be changed into a prime (135283651) 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, 4501 + ... + 17053.

It is an arithmetic number, because the mean of its divisors is an integer number (18234685).

Almost surely, 2^135283681 is an apocalyptic number.

It is an amenable number.

135283681 is a deficient number, since it is larger than the sum of its proper divisors (10593799).

135283681 is a wasteful number, since it uses less digits than its factorization.

135283681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13395.

The product of its digits is 34560, while the sum is 37.

The square root of 135283681 is about 11631.1513187646. The cubic root of 135283681 is about 513.3518568211.

The spelling of 135283681 in words is "one hundred thirty-five million, two hundred eighty-three thousand, six hundred eighty-one".