1343345621 has 8 divisors (see below), whose sum is σ = 1360255680. Its totient is φ = 1326452992.

The previous prime is 1343345609. The next prime is 1343345677. The reversal of 1343345621 is 1265433431.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1343345621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1343345021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225560 + ... + 231438.

It is an arithmetic number, because the mean of its divisors is an integer number (170031960).

Almost surely, 2^1343345621 is an apocalyptic number.

It is an amenable number.

1343345621 is a deficient number, since it is larger than the sum of its proper divisors (16910059).

1343345621 is an equidigital number, since it uses as much as digits as its factorization.

1343345621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8715.

The product of its digits is 25920, while the sum is 32.

The square root of 1343345621 is about 36651.6796477324. The cubic root of 1343345621 is about 1103.3905361150.

The spelling of 1343345621 in words is "one billion, three hundred forty-three million, three hundred forty-five thousand, six hundred twenty-one".