1310120113 has 4 divisors (see below), whose sum is σ = 1387186020. Its totient is φ = 1233054208.

The previous prime is 1310120111. The next prime is 1310120137. The reversal of 1310120113 is 3110210131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 603783184 + 706336929 = 24572^2 + 26577^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310120113 - 2¹ = 1310120111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1310120093 and 1310120102.

It is not an unprimeable number, because it can be changed into a prime (1310120111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38532928 + ... + 38532961.

It is an arithmetic number, because the mean of its divisors is an integer number (346796505).

Almost surely, 2^1310120113 is an apocalyptic number.

It is an amenable number.

1310120113 is a deficient number, since it is larger than the sum of its proper divisors (77065907).

1310120113 is an equidigital number, since it uses as much as digits as its factorization.

1310120113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77065906.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1310120113 is about 36195.5814016020. The cubic root of 1310120113 is about 1094.2176220068.

Adding to 1310120113 its reverse (3110210131), we get a palindrome (4420330244).

The spelling of 1310120113 in words is "one billion, three hundred ten million, one hundred twenty thousand, one hundred thirteen".