1312011313 has 8 divisors (see below), whose sum is σ = 1413183200. Its totient is φ = 1214051328.

The previous prime is 1312011307. The next prime is 1312011317. The reversal of 1312011313 is 3131102131.

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

It is a cyclic number.

It is not a de Polignac number, because 1312011313 - 2²¹ = 1309914161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312011317) 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, 802128 + ... + 803761.

It is an arithmetic number, because the mean of its divisors is an integer number (176647900).

Almost surely, 2^1312011313 is an apocalyptic number.

It is an amenable number.

1312011313 is a deficient number, since it is larger than the sum of its proper divisors (101171887).

1312011313 is a wasteful number, since it uses less digits than its factorization.

1312011313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1605951.

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

The square root of 1312011313 is about 36221.6967161948. The cubic root of 1312011313 is about 1094.7438814958.

Adding to 1312011313 its reverse (3131102131), we get a palindrome (4443113444).

The spelling of 1312011313 in words is "one billion, three hundred twelve million, eleven thousand, three hundred thirteen".