1343239686 has 80 divisors (see below), whose sum is σ = 3080563200. Its totient is φ = 437357232.

The previous prime is 1343239679. The next prime is 1343239693. The reversal of 1343239686 is 6869323431.

It is an interprime number because it is at equal distance from previous prime (1343239679) and next prime (1343239693).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1317685 + ... + 1318703.

It is an arithmetic number, because the mean of its divisors is an integer number (38507040).

Almost surely, 2^1343239686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1343239686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1540281600).

1343239686 is an abundant number, since it is smaller than the sum of its proper divisors (1737323514).

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

1343239686 is a wasteful number, since it uses less digits than its factorization.

1343239686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1215 (or 1206 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The square root of 1343239686 is about 36650.2344603687. The cubic root of 1343239686 is about 1103.3615312316.

The spelling of 1343239686 in words is "one billion, three hundred forty-three million, two hundred thirty-nine thousand, six hundred eighty-six".