20312130343 has 2 divisors, whose sum is σ = 20312130344. Its totient is φ = 20312130342.

The previous prime is 20312130331. The next prime is 20312130409. The reversal of 20312130343 is 34303121302.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20312130343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20312130143) 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, 10156065171 + 10156065172.

It is an arithmetic number, because the mean of its divisors is an integer number (10156065172).

Almost surely, 2^20312130343 is an apocalyptic number.

20312130343 is a deficient number, since it is larger than the sum of its proper divisors (1).

20312130343 is an equidigital number, since it uses as much as digits as its factorization.

20312130343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20312130343 its reverse (34303121302), we get a palindrome (54615251645).

The spelling of 20312130343 in words is "twenty billion, three hundred twelve million, one hundred thirty thousand, three hundred forty-three".