1311032113 has 8 divisors (see below), whose sum is σ = 1347312456. Its totient is φ = 1274956800.

The previous prime is 1311032089. The next prime is 1311032123. The reversal of 1311032113 is 3112301131.

It can be written as a sum of positive squares in 4 ways, for example, as 10131489 + 1300900624 = 3183^2 + 36068^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311032113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311032123) 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 7 ways as a sum of consecutive naturals, for example, 38248 + ... + 63913.

It is an arithmetic number, because the mean of its divisors is an integer number (168414057).

Almost surely, 2^1311032113 is an apocalyptic number.

It is an amenable number.

1311032113 is a deficient number, since it is larger than the sum of its proper divisors (36280343).

1311032113 is a wasteful number, since it uses less digits than its factorization.

1311032113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102515.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1311032113 is about 36208.1774327292. The cubic root of 1311032113 is about 1094.4714651448.

Adding to 1311032113 its reverse (3112301131), we get a palindrome (4423333244).

The spelling of 1311032113 in words is "one billion, three hundred eleven million, thirty-two thousand, one hundred thirteen".