1321341535 has 4 divisors (see below), whose sum is σ = 1585609848. Its totient is φ = 1057073224.

The previous prime is 1321341517. The next prime is 1321341547. The reversal of 1321341535 is 5351431231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1321341535 - 2¹⁵ = 1321308767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132134149 + ... + 132134158.

It is an arithmetic number, because the mean of its divisors is an integer number (396402462).

Almost surely, 2^1321341535 is an apocalyptic number.

1321341535 is a deficient number, since it is larger than the sum of its proper divisors (264268313).

1321341535 is an equidigital number, since it uses as much as digits as its factorization.

1321341535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264268312.

The product of its digits is 5400, while the sum is 28.

The square root of 1321341535 is about 36350.2618284931. The cubic root of 1321341535 is about 1097.3328038534.

Adding to 1321341535 its reverse (5351431231), we get a palindrome (6672772766).

The spelling of 1321341535 in words is "one billion, three hundred twenty-one million, three hundred forty-one thousand, five hundred thirty-five".