1311142218 has 8 divisors (see below), whose sum is σ = 2622284448. Its totient is φ = 437047404.

The previous prime is 1311142199. The next prime is 1311142237. The reversal of 1311142218 is 8122411131.

It is an interprime number because it is at equal distance from previous prime (1311142199) and next prime (1311142237).

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

1311142218 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109261846 + ... + 109261857.

It is an arithmetic number, because the mean of its divisors is an integer number (327785556).

Almost surely, 2^1311142218 is an apocalyptic number.

1311142218 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311142218 is a wasteful number, since it uses less digits than its factorization.

1311142218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218523708.

The product of its digits is 384, while the sum is 24.

The square root of 1311142218 is about 36209.6978446383. The cubic root of 1311142218 is about 1094.5021034504.

Adding to 1311142218 its reverse (8122411131), we get a palindrome (9433553349).

The spelling of 1311142218 in words is "one billion, three hundred eleven million, one hundred forty-two thousand, two hundred eighteen".