1344020521 has 2 divisors, whose sum is σ = 1344020522. Its totient is φ = 1344020520.

The previous prime is 1344020497. The next prime is 1344020591. The reversal of 1344020521 is 1250204431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1263020521 + 81000000 = 35539^2 + 9000^2 .

It is a cyclic number.

It is not a de Polignac number, because 1344020521 - 2⁷ = 1344020393 is a prime.

It is a super-2 number, since 2×1344020521² = 3612782321738222882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1344020492 and 1344020501.

It is not a weakly prime, because it can be changed into another prime (1344020591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672010260 + 672010261.

It is an arithmetic number, because the mean of its divisors is an integer number (672010261).

Almost surely, 2^1344020521 is an apocalyptic number.

It is an amenable number.

1344020521 is a deficient number, since it is larger than the sum of its proper divisors (1).

1344020521 is an equidigital number, since it uses as much as digits as its factorization.

1344020521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1344020521 is about 36660.8854366612. The cubic root of 1344020521 is about 1103.5752871789.

Adding to 1344020521 its reverse (1250204431), we get a palindrome (2594224952).

The spelling of 1344020521 in words is "one billion, three hundred forty-four million, twenty thousand, five hundred twenty-one".