1321040353 has 2 divisors, whose sum is σ = 1321040354. Its totient is φ = 1321040352.

The previous prime is 1321040269. The next prime is 1321040389. The reversal of 1321040353 is 3530401231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 852231249 + 468809104 = 29193^2 + 21652^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321040353 - 2¹³ = 1321032161 is a prime.

It is a super-2 number, since 2×1321040353² = 3490295228508729218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1321040053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660520176 + 660520177.

It is an arithmetic number, because the mean of its divisors is an integer number (660520177).

Almost surely, 2^1321040353 is an apocalyptic number.

It is an amenable number.

1321040353 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321040353 is an equidigital number, since it uses as much as digits as its factorization.

1321040353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 1321040353 is about 36346.1188161817. The cubic root of 1321040353 is about 1097.2494234420.

Adding to 1321040353 its reverse (3530401231), we get a palindrome (4851441584).

The spelling of 1321040353 in words is "one billion, three hundred twenty-one million, forty thousand, three hundred fifty-three".