1312616611 has 8 divisors (see below), whose sum is σ = 1341955584. Its totient is φ = 1283336520.

The previous prime is 1312616609. The next prime is 1312616621. The reversal of 1312616611 is 1166162131.

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 1312616611 - 2¹ = 1312616609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312616611.

It is not an unprimeable number, because it can be changed into a prime (1312616621) 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, 31996 + ... + 60406.

It is an arithmetic number, because the mean of its divisors is an integer number (167744448).

Almost surely, 2^1312616611 is an apocalyptic number.

1312616611 is a deficient number, since it is larger than the sum of its proper divisors (29338973).

1312616611 is an equidigital number, since it uses as much as digits as its factorization.

1312616611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29441.

The product of its digits is 1296, while the sum is 28.

The square root of 1312616611 is about 36230.0512144270. The cubic root of 1312616611 is about 1094.9122094153.

Adding to 1312616611 its reverse (1166162131), we get a palindrome (2478778742).

The spelling of 1312616611 in words is "one billion, three hundred twelve million, six hundred sixteen thousand, six hundred eleven".