1340601321 has 8 divisors (see below), whose sum is σ = 1787747680. Its totient is φ = 893594592.

The previous prime is 1340601289. The next prime is 1340601329. The reversal of 1340601321 is 1231060431.

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

It is not a de Polignac number, because 1340601321 - 2⁵ = 1340601289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340601329) 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, 9955 + ... + 52728.

It is an arithmetic number, because the mean of its divisors is an integer number (223468460).

Almost surely, 2^1340601321 is an apocalyptic number.

It is an amenable number.

1340601321 is a deficient number, since it is larger than the sum of its proper divisors (447146359).

1340601321 is an equidigital number, since it uses as much as digits as its factorization.

1340601321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69815.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1340601321 is about 36614.2229331717. Note that the first 3 decimals coincide. The cubic root of 1340601321 is about 1102.6386573928.

Adding to 1340601321 its reverse (1231060431), we get a palindrome (2571661752).

The spelling of 1340601321 in words is "one billion, three hundred forty million, six hundred one thousand, three hundred twenty-one".