1311003323121 has 8 divisors (see below), whose sum is σ = 1780985646720. Its totient is φ = 857511607472.

The previous prime is 1311003323117. The next prime is 1311003323137. The reversal of 1311003323121 is 1213233001131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1311003323121 - 2² = 1311003323117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311003323191) 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, 4122651801 + ... + 4122652118.

It is an arithmetic number, because the mean of its divisors is an integer number (222623205840).

Almost surely, 2^{1311003323121} is an apocalyptic number.

It is an amenable number.

1311003323121 is a deficient number, since it is larger than the sum of its proper divisors (469982323599).

1311003323121 is an equidigital number, since it uses as much as digits as its factorization.

1311003323121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8245303975.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1311003323121 its reverse (1213233001131), we get a palindrome (2524236324252).

The spelling of 1311003323121 in words is "one trillion, three hundred eleven billion, three million, three hundred twenty-three thousand, one hundred twenty-one".