1340503502321 has 16 divisors (see below), whose sum is σ = 1362429868800. Its totient is φ = 1318768138368.

The previous prime is 1340503502267. The next prime is 1340503502363. The reversal of 1340503502321 is 1232053050431.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1340503502321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340503508321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18423605 + ... + 18496221.

It is an arithmetic number, because the mean of its divisors is an integer number (85151866800).

Almost surely, 2^{1340503502321} is an apocalyptic number.

It is an amenable number.

1340503502321 is a deficient number, since it is larger than the sum of its proper divisors (21926366479).

1340503502321 is a wasteful number, since it uses less digits than its factorization.

1340503502321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73928.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 1340503502321 its reverse (1232053050431), we get a palindrome (2572556552752).

The spelling of 1340503502321 in words is "one trillion, three hundred forty billion, five hundred three million, five hundred two thousand, three hundred twenty-one".