2312321213 has 2 divisors, whose sum is σ = 2312321214. Its totient is φ = 2312321212.

The previous prime is 2312321203. The next prime is 2312321251. The reversal of 2312321213 is 3121232132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2205053764 + 107267449 = 46958^2 + 10357^2 .

It is a cyclic number.

It is not a de Polignac number, because 2312321213 - 2¹⁶ = 2312255677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2312321203) 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, 1156160606 + 1156160607.

It is an arithmetic number, because the mean of its divisors is an integer number (1156160607).

Almost surely, 2^2312321213 is an apocalyptic number.

It is an amenable number.

2312321213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2312321213 is an equidigital number, since it uses as much as digits as its factorization.

2312321213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 20.

The square root of 2312321213 is about 48086.6011795386. The cubic root of 2312321213 is about 1322.3590377712.

Adding to 2312321213 its reverse (3121232132), we get a palindrome (5433553345).

The spelling of 2312321213 in words is "two billion, three hundred twelve million, three hundred twenty-one thousand, two hundred thirteen".