1326531105 has 12 divisors (see below), whose sum is σ = 2299320660. Its totient is φ = 707483232.

The previous prime is 1326531091. The next prime is 1326531139. The reversal of 1326531105 is 5011356231.

1326531105 is a `hidden beast` number, since 1 + 3 + 2 + 653 + 1 + 1 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 263510289 + 1063020816 = 16233^2 + 32604^2 .

It is not a de Polignac number, because 1326531105 - 2¹⁰ = 1326530081 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14739190 + ... + 14739279.

It is an arithmetic number, because the mean of its divisors is an integer number (191610055).

Almost surely, 2^1326531105 is an apocalyptic number.

1326531105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1326531105 is a deficient number, since it is larger than the sum of its proper divisors (972789555).

1326531105 is a wasteful number, since it uses less digits than its factorization.

1326531105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29478480 (or 29478477 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 1326531105 is about 36421.5747188394. The cubic root of 1326531105 is about 1098.7675190472.

Adding to 1326531105 its reverse (5011356231), we get a palindrome (6337887336).

The spelling of 1326531105 in words is "one billion, three hundred twenty-six million, five hundred thirty-one thousand, one hundred five".