1343316637 has 4 divisors (see below), whose sum is σ = 1446648700. Its totient is φ = 1239984576.

The previous prime is 1343316629. The next prime is 1343316643. The reversal of 1343316637 is 7366133431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 375235641 + 968080996 = 19371^2 + 31114^2 .

It is a cyclic number.

It is not a de Polignac number, because 1343316637 - 2³ = 1343316629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1343316596 and 1343316605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343316617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51666012 + ... + 51666037.

It is an arithmetic number, because the mean of its divisors is an integer number (361662175).

Almost surely, 2^1343316637 is an apocalyptic number.

It is an amenable number.

1343316637 is a deficient number, since it is larger than the sum of its proper divisors (103332063).

1343316637 is a wasteful number, since it uses less digits than its factorization.

1343316637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103332062.

The product of its digits is 81648, while the sum is 37.

The square root of 1343316637 is about 36651.2842476222. The cubic root of 1343316637 is about 1103.3826004800.

The spelling of 1343316637 in words is "one billion, three hundred forty-three million, three hundred sixteen thousand, six hundred thirty-seven".