105103078281 has 32 divisors (see below), whose sum is σ = 157286949120. Its totient is φ = 69359899392.

The previous prime is 105103078279. The next prime is 105103078303. The reversal of 105103078281 is 182870301501.

It is not a de Polignac number, because 105103078281 - 2¹ = 105103078279 is a prime.

It is a super-2 number, since 2×105103078281² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105103078271) 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 in 31 ways as a sum of consecutive naturals, for example, 2410036 + ... + 2453258.

It is an arithmetic number, because the mean of its divisors is an integer number (4915217160).

Almost surely, 2^105103078281 is an apocalyptic number.

It is an amenable number.

105103078281 is a deficient number, since it is larger than the sum of its proper divisors (52183870839).

105103078281 is a wasteful number, since it uses less digits than its factorization.

105103078281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44142 (or 44136 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

Adding to 105103078281 its reverse (182870301501), we get a palindrome (287973379782).

The spelling of 105103078281 in words is "one hundred five billion, one hundred three million, seventy-eight thousand, two hundred eighty-one".