1310100505 has 16 divisors (see below), whose sum is σ = 1833379200. Its totient is φ = 898353456.

The previous prime is 1310100503. The next prime is 1310100509. The reversal of 1310100505 is 5050010131.

It is not a de Polignac number, because 1310100505 - 2¹ = 1310100503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1310100503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380239 + ... + 383668.

It is an arithmetic number, because the mean of its divisors is an integer number (114586200).

Almost surely, 2^1310100505 is an apocalyptic number.

It is an amenable number.

1310100505 is a deficient number, since it is larger than the sum of its proper divisors (523278695).

1310100505 is an frugal number, since it uses more digits than its factorization.

1310100505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763933 (or 763919 counting only the distinct ones).

The product of its (nonzero) digits is 75, while the sum is 16.

The square root of 1310100505 is about 36195.3105387977. The cubic root of 1310100505 is about 1094.2121630859.

Adding to 1310100505 its reverse (5050010131), we get a palindrome (6360110636).

The spelling of 1310100505 in words is "one billion, three hundred ten million, one hundred thousand, five hundred five".