1311418643 has 8 divisors (see below), whose sum is σ = 1336791600. Its totient is φ = 1286288800.

The previous prime is 1311418631. The next prime is 1311418673. The reversal of 1311418643 is 3468141131.

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 1311418643 - 2¹⁰ = 1311417619 is a prime.

It is a super-2 number, since 2×1311418643² = 3439637714415922898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311418673) 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, 49868 + ... + 71481.

It is an arithmetic number, because the mean of its divisors is an integer number (167098950).

Almost surely, 2^1311418643 is an apocalyptic number.

1311418643 is a deficient number, since it is larger than the sum of its proper divisors (25372957).

1311418643 is a wasteful number, since it uses less digits than its factorization.

1311418643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121557.

The product of its digits is 6912, while the sum is 32.

The square root of 1311418643 is about 36213.5146457783. The cubic root of 1311418643 is about 1094.5790151386.

Adding to 1311418643 its reverse (3468141131), we get a palindrome (4779559774).

The spelling of 1311418643 in words is "one billion, three hundred eleven million, four hundred eighteen thousand, six hundred forty-three".