1311231000001 has 32 divisors (see below), whose sum is σ = 1466234784000. Its totient is φ = 1164279099648.

The previous prime is 1311230999993. The next prime is 1311231000007. The reversal of 1311231000001 is 1000001321131.

It is a cyclic number.

It is not a de Polignac number, because 1311231000001 - 2³ = 1311230999993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311231000007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 166332606 + ... + 166340488.

It is an arithmetic number, because the mean of its divisors is an integer number (45819837000).

Almost surely, 2^{1311231000001} is an apocalyptic number.

It is an amenable number.

1311231000001 is a deficient number, since it is larger than the sum of its proper divisors (155003783999).

1311231000001 is a wasteful number, since it uses less digits than its factorization.

1311231000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9513.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 1311231000001 its reverse (1000001321131), we get a palindrome (2311232321132).

The spelling of 1311231000001 in words is "one trillion, three hundred eleven billion, two hundred thirty-one million, one", and thus it is an aban number.