2120232311 has 4 divisors (see below), whose sum is σ = 2193343800. Its totient is φ = 2047120824.

The previous prime is 2120232307. The next prime is 2120232343. The reversal of 2120232311 is 1132320212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2120232311 - 2² = 2120232307 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2120232311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120232811) 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, 36555701 + ... + 36555758.

It is an arithmetic number, because the mean of its divisors is an integer number (548335950).

Almost surely, 2^2120232311 is an apocalyptic number.

2120232311 is a deficient number, since it is larger than the sum of its proper divisors (73111489).

2120232311 is an equidigital number, since it uses as much as digits as its factorization.

2120232311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73111488.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2120232311 is about 46045.9804000306. The cubic root of 2120232311 is about 1284.6785795937.

Adding to 2120232311 its reverse (1132320212), we get a palindrome (3252552523).

The spelling of 2120232311 in words is "two billion, one hundred twenty million, two hundred thirty-two thousand, three hundred eleven".