135632231 has 8 divisors (see below), whose sum is σ = 155788800. Its totient is φ = 115670808.

The previous prime is 135632227. The next prime is 135632243. The reversal of 135632231 is 132236531.

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 135632231 - 2² = 135632227 is a prime.

It is a super-2 number, since 2×135632231² = 36792204172074722, 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 135632231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135632201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47291 + ... + 50076.

It is an arithmetic number, because the mean of its divisors is an integer number (19473600).

Almost surely, 2^135632231 is an apocalyptic number.

135632231 is a deficient number, since it is larger than the sum of its proper divisors (20156569).

135632231 is an equidigital number, since it uses as much as digits as its factorization.

135632231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97573.

The product of its digits is 3240, while the sum is 26.

The square root of 135632231 is about 11646.1251495937. The cubic root of 135632231 is about 513.7923517910.

Adding to 135632231 its reverse (132236531), we get a palindrome (267868762).

The spelling of 135632231 in words is "one hundred thirty-five million, six hundred thirty-two thousand, two hundred thirty-one".