2123201311 has 12 divisors (see below), whose sum is σ = 2694378600. Its totient is φ = 1654442160.

The previous prime is 2123201287. The next prime is 2123201351. The reversal of 2123201311 is 1131023212.

It is not a de Polignac number, because 2123201311 - 2⁹ = 2123200799 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 (2123201351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1969036 + ... + 1970113.

It is an arithmetic number, because the mean of its divisors is an integer number (224531550).

Almost surely, 2^2123201311 is an apocalyptic number.

2123201311 is a deficient number, since it is larger than the sum of its proper divisors (571177289).

2123201311 is a wasteful number, since it uses less digits than its factorization.

2123201311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3939174 (or 3939167 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2123201311 is about 46078.2086348851. The cubic root of 2123201311 is about 1285.2779528632.

Adding to 2123201311 its reverse (1131023212), we get a palindrome (3254224523).

The spelling of 2123201311 in words is "two billion, one hundred twenty-three million, two hundred one thousand, three hundred eleven".