135630137 has 4 divisors (see below), whose sum is σ = 136620276. Its totient is φ = 134640000.

The previous prime is 135630133. The next prime is 135630139. The reversal of 135630137 is 731036531.

It is a happy number.

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 36348841 + 99281296 = 6029^2 + 9964^2 .

It is a cyclic number.

It is not a de Polignac number, because 135630137 - 2² = 135630133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135630133) 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, 494864 + ... + 495137.

It is an arithmetic number, because the mean of its divisors is an integer number (34155069).

Almost surely, 2^135630137 is an apocalyptic number.

It is an amenable number.

135630137 is a deficient number, since it is larger than the sum of its proper divisors (990139).

135630137 is an equidigital number, since it uses as much as digits as its factorization.

135630137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990138.

The product of its (nonzero) digits is 5670, while the sum is 29.

The square root of 135630137 is about 11646.0352481005. The cubic root of 135630137 is about 513.7897076636.

Adding to 135630137 its reverse (731036531), we get a palindrome (866666668).

The spelling of 135630137 in words is "one hundred thirty-five million, six hundred thirty thousand, one hundred thirty-seven".