135321331413 has 4 divisors (see below), whose sum is σ = 180428441888. Its totient is φ = 90214220940.

The previous prime is 135321331399. The next prime is 135321331429. The reversal of 135321331413 is 314133123531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 135321331413 - 2⁸ = 135321331157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135321331433) 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, 22553555233 + ... + 22553555238.

It is an arithmetic number, because the mean of its divisors is an integer number (45107110472).

Almost surely, 2^135321331413 is an apocalyptic number.

It is an amenable number.

135321331413 is a deficient number, since it is larger than the sum of its proper divisors (45107110475).

135321331413 is an equidigital number, since it uses as much as digits as its factorization.

135321331413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45107110474.

The product of its digits is 9720, while the sum is 30.

Adding to 135321331413 its reverse (314133123531), we get a palindrome (449454454944).

The spelling of 135321331413 in words is "one hundred thirty-five billion, three hundred twenty-one million, three hundred thirty-one thousand, four hundred thirteen".