2135523212311 has 16 divisors (see below), whose sum is σ = 2245576318560. Its totient is φ = 2027903713920.

The previous prime is 2135523212293. The next prime is 2135523212321. The reversal of 2135523212311 is 1132123255312.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2135523212311 - 2¹⁷ = 2135523081239 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 (2135523212321) 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, 22689996 + ... + 22783918.

It is an arithmetic number, because the mean of its divisors is an integer number (140348519910).

Almost surely, 2^{2135523212311} is an apocalyptic number.

2135523212311 is a deficient number, since it is larger than the sum of its proper divisors (110053106249).

2135523212311 is a wasteful number, since it uses less digits than its factorization.

2135523212311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106866.

The product of its digits is 10800, while the sum is 31.

Adding to 2135523212311 its reverse (1132123255312), we get a palindrome (3267646467623).

The spelling of 2135523212311 in words is "two trillion, one hundred thirty-five billion, five hundred twenty-three million, two hundred twelve thousand, three hundred eleven".