2313201321 has 12 divisors (see below), whose sum is σ = 3465042672. Its totient is φ = 1542134052.

The previous prime is 2313201257. The next prime is 2313201323. The reversal of 2313201321 is 1231023132.

2313201321 is a `hidden beast` number, since 23 + 1 + 320 + 1 + 321 = 666.

It is not a de Polignac number, because 2313201321 - 2⁶ = 2313201257 is a prime.

It is a super-2 number, since 2×2313201321² = 10701800702952290082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2313201294 and 2313201303.

It is not an unprimeable number, because it can be changed into a prime (2313201323) 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, 4759431 + ... + 4759916.

It is an arithmetic number, because the mean of its divisors is an integer number (288753556).

Almost surely, 2^2313201321 is an apocalyptic number.

It is an amenable number.

2313201321 is a deficient number, since it is larger than the sum of its proper divisors (1151841351).

2313201321 is an frugal number, since it uses more digits than its factorization.

2313201321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9519362 (or 9519350 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2313201321 is about 48095.7515899274. The cubic root of 2313201321 is about 1322.5267871214.

Adding to 2313201321 its reverse (1231023132), we get a palindrome (3544224453).

The spelling of 2313201321 in words is "two billion, three hundred thirteen million, two hundred one thousand, three hundred twenty-one".