105344343491 has 2 divisors, whose sum is σ = 105344343492. Its totient is φ = 105344343490.

The previous prime is 105344343487. The next prime is 105344343563. The reversal of 105344343491 is 194343443501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 105344343491 - 2² = 105344343487 is a prime.

It is a super-2 number, since 2×105344343491² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (105344343421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52672171745 + 52672171746.

It is an arithmetic number, because the mean of its divisors is an integer number (52672171746).

Almost surely, 2^105344343491 is an apocalyptic number.

105344343491 is a deficient number, since it is larger than the sum of its proper divisors (1).

105344343491 is an equidigital number, since it uses as much as digits as its factorization.

105344343491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 41.

Adding to 105344343491 its reverse (194343443501), we get a palindrome (299687786992).

The spelling of 105344343491 in words is "one hundred five billion, three hundred forty-four million, three hundred forty-three thousand, four hundred ninety-one".