1311000031321 has 8 divisors (see below), whose sum is σ = 1354314841088. Its totient is φ = 1267749252000.

The previous prime is 1311000031301. The next prime is 1311000031391. The reversal of 1311000031321 is 1231300001131.

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 1311000031321 - 2²³ = 1310991642713 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311000031295 and 1311000031304.

It is not an unprimeable number, because it can be changed into a prime (1311000031301) 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, 15965985 + ... + 16047886.

It is an arithmetic number, because the mean of its divisors is an integer number (169289355136).

Almost surely, 2^{1311000031321} is an apocalyptic number.

It is an amenable number.

1311000031321 is a deficient number, since it is larger than the sum of its proper divisors (43314809767).

1311000031321 is a wasteful number, since it uses less digits than its factorization.

1311000031321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32015223.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 1311000031321 its reverse (1231300001131), we get a palindrome (2542300032452).

The spelling of 1311000031321 in words is "one trillion, three hundred eleven billion, thirty-one thousand, three hundred twenty-one".