2311201321 has 16 divisors (see below), whose sum is σ = 2720870208. Its totient is φ = 1935460800.

The previous prime is 2311201273. The next prime is 2311201349. The reversal of 2311201321 is 1231021132.

It is not a de Polignac number, because 2311201321 - 2¹⁷ = 2311070249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2311201295 and 2311201304.

It is not an unprimeable number, because it can be changed into a prime (2311201351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53755 + ... + 86671.

It is an arithmetic number, because the mean of its divisors is an integer number (170054388).

Almost surely, 2^2311201321 is an apocalyptic number.

It is an amenable number.

2311201321 is a deficient number, since it is larger than the sum of its proper divisors (409668887).

2311201321 is a wasteful number, since it uses less digits than its factorization.

2311201321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33432.

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

The square root of 2311201321 is about 48074.9552365886. The cubic root of 2311201321 is about 1322.1455238301.

Adding to 2311201321 its reverse (1231021132), we get a palindrome (3542222453).

The spelling of 2311201321 in words is "two billion, three hundred eleven million, two hundred one thousand, three hundred twenty-one".