1310121105 has 8 divisors (see below), whose sum is σ = 2096193792. Its totient is φ = 698731248.

The previous prime is 1310121103. The next prime is 1310121173. The reversal of 1310121105 is 5011210131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1310121105 - 2¹ = 1310121103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 87341407 = 1310121105 / (1 + 3 + 1 + 0 + 1 + 2 + 1 + 1 + 0 + 5).

It is not an unprimeable number, because it can be changed into a prime (1310121103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43670689 + ... + 43670718.

It is an arithmetic number, because the mean of its divisors is an integer number (262024224).

Almost surely, 2^1310121105 is an apocalyptic number.

1310121105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1310121105 is a deficient number, since it is larger than the sum of its proper divisors (786072687).

1310121105 is an equidigital number, since it uses as much as digits as its factorization.

1310121105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87341415.

The product of its (nonzero) digits is 30, while the sum is 15.

The square root of 1310121105 is about 36195.5951049295. The cubic root of 1310121105 is about 1094.2178981809.

Adding to 1310121105 its reverse (5011210131), we get a palindrome (6321331236).

The spelling of 1310121105 in words is "one billion, three hundred ten million, one hundred twenty-one thousand, one hundred five".