1321313303001 has 4 divisors (see below), whose sum is σ = 1761751070672. Its totient is φ = 880875535332.

The previous prime is 1321313302993. The next prime is 1321313303003. The reversal of 1321313303001 is 1003033131231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1321313303001 - 2³ = 1321313302993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1321313303003) 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, 220218883831 + ... + 220218883836.

It is an arithmetic number, because the mean of its divisors is an integer number (440437767668).

Almost surely, 2^{1321313303001} is an apocalyptic number.

It is an amenable number.

1321313303001 is a deficient number, since it is larger than the sum of its proper divisors (440437767671).

1321313303001 is an equidigital number, since it uses as much as digits as its factorization.

1321313303001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440437767670.

The product of its (nonzero) digits is 486, while the sum is 21.

Adding to 1321313303001 its reverse (1003033131231), we get a palindrome (2324346434232).

The spelling of 1321313303001 in words is "one trillion, three hundred twenty-one billion, three hundred thirteen million, three hundred three thousand, one".