135231856 has 10 divisors (see below), whose sum is σ = 262011752. Its totient is φ = 67615920.

The previous prime is 135231791. The next prime is 135231869. The reversal of 135231856 is 658132531.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4225980 + ... + 4226011.

Almost surely, 2^135231856 is an apocalyptic number.

135231856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

135231856 is a deficient number, since it is larger than the sum of its proper divisors (126779896).

135231856 is an equidigital number, since it uses as much as digits as its factorization.

135231856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8451999 (or 8451993 counting only the distinct ones).

The product of its digits is 21600, while the sum is 34.

The square root of 135231856 is about 11628.9232519610. The cubic root of 135231856 is about 513.2862961717.

The spelling of 135231856 in words is "one hundred thirty-five million, two hundred thirty-one thousand, eight hundred fifty-six".