2131311323 has 6 divisors (see below), whose sum is σ = 2184564132. Its totient is φ = 2079326480.

The previous prime is 2131311319. The next prime is 2131311341. The reversal of 2131311323 is 3231131312.

It is not a de Polignac number, because 2131311323 - 2² = 2131311319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2131311295 and 2131311304.

It is not an unprimeable number, because it can be changed into a prime (2131314323) 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 5 ways as a sum of consecutive naturals, for example, 632261 + ... + 635622.

It is an arithmetic number, because the mean of its divisors is an integer number (364094022).

Almost surely, 2^2131311323 is an apocalyptic number.

2131311323 is a deficient number, since it is larger than the sum of its proper divisors (53252809).

2131311323 is an equidigital number, since it uses as much as digits as its factorization.

2131311323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1267965 (or 1267924 counting only the distinct ones).

The product of its digits is 324, while the sum is 20.

The square root of 2131311323 is about 46166.1274420976. The cubic root of 2131311323 is about 1286.9123364277.

Adding to 2131311323 its reverse (3231131312), we get a palindrome (5362442635).

The spelling of 2131311323 in words is "two billion, one hundred thirty-one million, three hundred eleven thousand, three hundred twenty-three".