1346324821 has 4 divisors (see below), whose sum is σ = 1349136000. Its totient is φ = 1343513644.

The previous prime is 1346324807. The next prime is 1346324897. The reversal of 1346324821 is 1284236431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1284236431 = 389 ⋅3301379.

It is a cyclic number.

It is not a de Polignac number, because 1346324821 - 2²⁷ = 1212107093 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 (1346324801) 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, 1404871 + ... + 1405828.

It is an arithmetic number, because the mean of its divisors is an integer number (337284000).

Almost surely, 2^1346324821 is an apocalyptic number.

It is an amenable number.

1346324821 is a deficient number, since it is larger than the sum of its proper divisors (2811179).

1346324821 is an equidigital number, since it uses as much as digits as its factorization.

1346324821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2811178.

The product of its digits is 27648, while the sum is 34.

The square root of 1346324821 is about 36692.2992056916. The cubic root of 1346324821 is about 1104.2056140193.

The spelling of 1346324821 in words is "one billion, three hundred forty-six million, three hundred twenty-four thousand, eight hundred twenty-one".