1331310113 has 4 divisors (see below), whose sum is σ = 1521497280. Its totient is φ = 1141122948.

The previous prime is 1331310067. The next prime is 1331310121. The reversal of 1331310113 is 3110131331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3110131331 = 1429 ⋅2176439.

It is a de Polignac number, because none of the positive numbers 2^k-1331310113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331310091 and 1331310100.

It is not an unprimeable number, because it can be changed into a prime (1331310193) 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, 95093573 + ... + 95093586.

It is an arithmetic number, because the mean of its divisors is an integer number (380374320).

Almost surely, 2^1331310113 is an apocalyptic number.

It is an amenable number.

1331310113 is a deficient number, since it is larger than the sum of its proper divisors (190187167).

1331310113 is an equidigital number, since it uses as much as digits as its factorization.

1331310113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190187166.

The product of its (nonzero) digits is 81, while the sum is 17.

The square root of 1331310113 is about 36487.1225639951. The cubic root of 1331310113 is about 1100.0854239445.

Adding to 1331310113 its reverse (3110131331), we get a palindrome (4441441444).

The spelling of 1331310113 in words is "one billion, three hundred thirty-one million, three hundred ten thousand, one hundred thirteen".