2136512311 has 4 divisors (see below), whose sum is σ = 2136625072. Its totient is φ = 2136399552.

The previous prime is 2136512303. The next prime is 2136512347. The reversal of 2136512311 is 1132156312.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2136512311 - 2³ = 2136512303 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 (2136512351) 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, 20235 + ... + 68428.

It is an arithmetic number, because the mean of its divisors is an integer number (534156268).

Almost surely, 2^2136512311 is an apocalyptic number.

2136512311 is a deficient number, since it is larger than the sum of its proper divisors (112761).

2136512311 is an equidigital number, since it uses as much as digits as its factorization.

2136512311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112760.

The product of its digits is 1080, while the sum is 25.

The square root of 2136512311 is about 46222.4221671690. The cubic root of 2136512311 is about 1287.9582932031.

Adding to 2136512311 its reverse (1132156312), we get a palindrome (3268668623).

The spelling of 2136512311 in words is "two billion, one hundred thirty-six million, five hundred twelve thousand, three hundred eleven".