1321359513 has 8 divisors (see below), whose sum is σ = 1802785248. Its totient is φ = 860420064.

The previous prime is 1321359497. The next prime is 1321359553. The reversal of 1321359513 is 3159531231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1321359513 - 2⁴ = 1321359497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321359553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5121420 + ... + 5121677.

It is an arithmetic number, because the mean of its divisors is an integer number (225348156).

Almost surely, 2^1321359513 is an apocalyptic number.

It is an amenable number.

1321359513 is a deficient number, since it is larger than the sum of its proper divisors (481425735).

1321359513 is a wasteful number, since it uses less digits than its factorization.

1321359513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10243143.

The product of its digits is 12150, while the sum is 33.

The square root of 1321359513 is about 36350.5091161046. The cubic root of 1321359513 is about 1097.3377805530.

The spelling of 1321359513 in words is "one billion, three hundred twenty-one million, three hundred fifty-nine thousand, five hundred thirteen".