2313121201331 has 4 divisors (see below), whose sum is σ = 2336967811752. Its totient is φ = 2289274590912.

The previous prime is 2313121201309. The next prime is 2313121201333. The reversal of 2313121201331 is 1331021213132.

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 2313121201331 - 2⁶ = 2313121201267 is a prime.

It is a super-2 number, since 2×2313121201331² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2313121201297 and 2313121201306.

It is not an unprimeable number, because it can be changed into a prime (2313121201333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11923305065 + ... + 11923305258.

It is an arithmetic number, because the mean of its divisors is an integer number (584241952938).

Almost surely, 2^{2313121201331} is an apocalyptic number.

2313121201331 is a deficient number, since it is larger than the sum of its proper divisors (23846610421).

2313121201331 is an equidigital number, since it uses as much as digits as its factorization.

2313121201331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23846610420.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 2313121201331 its reverse (1331021213132), we get a palindrome (3644142414463).

The spelling of 2313121201331 in words is "two trillion, three hundred thirteen billion, one hundred twenty-one million, two hundred one thousand, three hundred thirty-one".