135231021241 has 16 divisors (see below), whose sum is σ = 138929264640. Its totient is φ = 131584012560.

The previous prime is 135231021209. The next prime is 135231021251. The reversal of 135231021241 is 142120132531.

It is a cyclic number.

It is not a de Polignac number, because 135231021241 - 2⁵ = 135231021209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135231021251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22584450 + ... + 22590436.

It is an arithmetic number, because the mean of its divisors is an integer number (8683079040).

Almost surely, 2^135231021241 is an apocalyptic number.

It is an amenable number.

135231021241 is a deficient number, since it is larger than the sum of its proper divisors (3698243399).

135231021241 is an equidigital number, since it uses as much as digits as its factorization.

135231021241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10164.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 135231021241 its reverse (142120132531), we get a palindrome (277351153772).

The spelling of 135231021241 in words is "one hundred thirty-five billion, two hundred thirty-one million, twenty-one thousand, two hundred forty-one".