2021312323 has 2 divisors, whose sum is σ = 2021312324. Its totient is φ = 2021312322.

The previous prime is 2021312311. The next prime is 2021312327. The reversal of 2021312323 is 3232131202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021312323 is a prime.

It is a super-2 number, since 2×2021312323² = 8171407014223312658, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2021312323.

It is not a weakly prime, because it can be changed into another prime (2021312327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010656161 + 1010656162.

It is an arithmetic number, because the mean of its divisors is an integer number (1010656162).

Almost surely, 2^2021312323 is an apocalyptic number.

2021312323 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021312323 is an equidigital number, since it uses as much as digits as its factorization.

2021312323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2021312323 is about 44959.0071398380. The cubic root of 2021312323 is about 1264.3805542026.

Adding to 2021312323 its reverse (3232131202), we get a palindrome (5253443525).

The spelling of 2021312323 in words is "two billion, twenty-one million, three hundred twelve thousand, three hundred twenty-three".