1311215606 has 8 divisors (see below), whose sum is σ = 1967259720. Its totient is φ = 655462368.

The previous prime is 1311215539. The next prime is 1311215611. The reversal of 1311215606 is 6065121131.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61076 + ... + 79703.

It is an arithmetic number, because the mean of its divisors is an integer number (245907465).

Almost surely, 2^1311215606 is an apocalyptic number.

1311215606 is a deficient number, since it is larger than the sum of its proper divisors (656044114).

1311215606 is a wasteful number, since it uses less digits than its factorization.

1311215606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145438.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1311215606 is about 36210.7112053878. The cubic root of 1311215606 is about 1094.5225237680.

Adding to 1311215606 its reverse (6065121131), we get a palindrome (7376336737).

The spelling of 1311215606 in words is "one billion, three hundred eleven million, two hundred fifteen thousand, six hundred six".