1331331302321 has 8 divisors (see below), whose sum is σ = 1332971426784. Its totient is φ = 1329692031360.

The previous prime is 1331331302303. The next prime is 1331331302363. The reversal of 1331331302321 is 1232031331331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331331302321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331331302921) 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, 2936801 + ... + 3359681.

It is an arithmetic number, because the mean of its divisors is an integer number (166621428348).

Almost surely, 2^{1331331302321} is an apocalyptic number.

It is an amenable number.

1331331302321 is a deficient number, since it is larger than the sum of its proper divisors (1640124463).

1331331302321 is a wasteful number, since it uses less digits than its factorization.

1331331302321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426751.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 1331331302321 its reverse (1232031331331), we get a palindrome (2563362633652).

The spelling of 1331331302321 in words is "one trillion, three hundred thirty-one billion, three hundred thirty-one million, three hundred two thousand, three hundred twenty-one".