105147391 has 2 divisors, whose sum is σ = 105147392. Its totient is φ = 105147390.

The previous prime is 105147373. The next prime is 105147401. The reversal of 105147391 is 193741501.

It is a strong prime.

It is an emirp because it is prime and its reverse (193741501) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 105147391 - 2⁹ = 105146879 is a prime.

It is a super-2 number, since 2×105147391² = 22111947668213762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105147331) 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, 52573695 + 52573696.

It is an arithmetic number, because the mean of its divisors is an integer number (52573696).

Almost surely, 2^105147391 is an apocalyptic number.

105147391 is a deficient number, since it is larger than the sum of its proper divisors (1).

105147391 is an equidigital number, since it uses as much as digits as its factorization.

105147391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 105147391 is about 10254.1401882362. The cubic root of 105147391 is about 471.9900394695.

Adding to 105147391 its reverse (193741501), we get a palindrome (298888892).

The spelling of 105147391 in words is "one hundred five million, one hundred forty-seven thousand, three hundred ninety-one".