1341335521 has 8 divisors (see below), whose sum is σ = 1392031080. Its totient is φ = 1290936192.

The previous prime is 1341335477. The next prime is 1341335537. The reversal of 1341335521 is 1255331431.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 143137296 + 1198198225 = 11964^2 + 34615^2 .

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-1341335521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1341335521.

It is not an unprimeable number, because it can be changed into a prime (1341335561) 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 in 7 ways as a sum of consecutive naturals, for example, 64810 + ... + 82963.

It is an arithmetic number, because the mean of its divisors is an integer number (174003885).

Almost surely, 2^1341335521 is an apocalyptic number.

It is an amenable number.

1341335521 is a deficient number, since it is larger than the sum of its proper divisors (50695559).

1341335521 is a wasteful number, since it uses less digits than its factorization.

1341335521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148115.

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

The square root of 1341335521 is about 36624.2477192365. The cubic root of 1341335521 is about 1102.8399127414.

Adding to 1341335521 its reverse (1255331431), we get a palindrome (2596666952).

The spelling of 1341335521 in words is "one billion, three hundred forty-one million, three hundred thirty-five thousand, five hundred twenty-one".