1340560321 has 8 divisors (see below), whose sum is σ = 1366277760. Its totient is φ = 1315010928.

The previous prime is 1340560297. The next prime is 1340560327. The reversal of 1340560321 is 1230650431.

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

It is a cyclic number.

It is not a de Polignac number, because 1340560321 - 2¹⁵ = 1340527553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340560327) 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, 25846 + ... + 57871.

It is an arithmetic number, because the mean of its divisors is an integer number (170784720).

Almost surely, 2^1340560321 is an apocalyptic number.

It is an amenable number.

1340560321 is a deficient number, since it is larger than the sum of its proper divisors (25717439).

1340560321 is an equidigital number, since it uses as much as digits as its factorization.

1340560321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84023.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1340560321 is about 36613.6630371778. The cubic root of 1340560321 is about 1102.6274165053.

It can be divided in two parts, 13405 and 60321, that multiplied together give a triangular number (808603005 = T₄₀₂₁₄).

The spelling of 1340560321 in words is "one billion, three hundred forty million, five hundred sixty thousand, three hundred twenty-one".