1311012001031 has 8 divisors (see below), whose sum is σ = 1329907572000. Its totient is φ = 1292128391680.

The previous prime is 1311012000973. The next prime is 1311012001043. The reversal of 1311012001031 is 1301002101131.

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 a de Polignac number, because none of the positive numbers 2^k-1311012001031 is a prime.

It is a super-2 number, since 2×1311012001031² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311012000997 and 1311012001015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311012001081) 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, 2769506 + ... + 3208143.

It is an arithmetic number, because the mean of its divisors is an integer number (166238446500).

Almost surely, 2^{1311012001031} is an apocalyptic number.

1311012001031 is a deficient number, since it is larger than the sum of its proper divisors (18895570969).

1311012001031 is an equidigital number, since it uses as much as digits as its factorization.

1311012001031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5980809.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 1311012001031 its reverse (1301002101131), we get a palindrome (2612014102162).

The spelling of 1311012001031 in words is "one trillion, three hundred eleven billion, twelve million, one thousand, thirty-one".