1343383621 has 2 divisors, whose sum is σ = 1343383622. Its totient is φ = 1343383620.

The previous prime is 1343383589. The next prime is 1343383627. The reversal of 1343383621 is 1263833431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 989417025 + 353966596 = 31455^2 + 18814^2 .

It is a cyclic number.

It is not a de Polignac number, because 1343383621 - 2⁵ = 1343383589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1343383627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 671691810 + 671691811.

It is an arithmetic number, because the mean of its divisors is an integer number (671691811).

Almost surely, 2^1343383621 is an apocalyptic number.

It is an amenable number.

1343383621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1343383621 is an equidigital number, since it uses as much as digits as its factorization.

1343383621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 34.

The square root of 1343383621 is about 36652.1980377712. The cubic root of 1343383621 is about 1103.4009401004.

The spelling of 1343383621 in words is "one billion, three hundred forty-three million, three hundred eighty-three thousand, six hundred twenty-one".