1321318214803 has 4 divisors (see below), whose sum is σ = 1390861278760. Its totient is φ = 1251775150848.

The previous prime is 1321318214791. The next prime is 1321318214819. The reversal of 1321318214803 is 3084128131231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321318214803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321318214833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34771531950 + ... + 34771531987.

It is an arithmetic number, because the mean of its divisors is an integer number (347715319690).

Almost surely, 2^{1321318214803} is an apocalyptic number.

1321318214803 is a deficient number, since it is larger than the sum of its proper divisors (69543063957).

1321318214803 is an equidigital number, since it uses as much as digits as its factorization.

1321318214803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69543063956.

The product of its (nonzero) digits is 27648, while the sum is 37.

The spelling of 1321318214803 in words is "one trillion, three hundred twenty-one billion, three hundred eighteen million, two hundred fourteen thousand, eight hundred three".