1343688540 has 24 divisors (see below), whose sum is σ = 3762328080. Its totient is φ = 358316928.

The previous prime is 1343688539. The next prime is 1343688557. The reversal of 1343688540 is 458863431.

It is a junction number, because it is equal to n+sod(n) for n = 1343688492 and 1343688501.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11197345 + ... + 11197464.

It is an arithmetic number, because the mean of its divisors is an integer number (156763670).

Almost surely, 2^1343688540 is an apocalyptic number.

1343688540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1343688540 is an abundant number, since it is smaller than the sum of its proper divisors (2418639540).

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

1343688540 is a wasteful number, since it uses less digits than its factorization.

1343688540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22394821 (or 22394819 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The square root of 1343688540 is about 36656.3574295101. The cubic root of 1343688540 is about 1103.4844164939.

The spelling of 1343688540 in words is "one billion, three hundred forty-three million, six hundred eighty-eight thousand, five hundred forty".