21030112343 has 2 divisors, whose sum is σ = 21030112344. Its totient is φ = 21030112342.

The previous prime is 21030112331. The next prime is 21030112373. The reversal of 21030112343 is 34321103012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21030112343 - 2¹⁴ = 21030095959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21030112373) 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 as a sum of consecutive naturals, namely, 10515056171 + 10515056172.

It is an arithmetic number, because the mean of its divisors is an integer number (10515056172).

Almost surely, 2^21030112343 is an apocalyptic number.

21030112343 is a deficient number, since it is larger than the sum of its proper divisors (1).

21030112343 is an equidigital number, since it uses as much as digits as its factorization.

21030112343 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 20.

Adding to 21030112343 its reverse (34321103012), we get a palindrome (55351215355).

The spelling of 21030112343 in words is "twenty-one billion, thirty million, one hundred twelve thousand, three hundred forty-three".