1311011031210 has 64 divisors (see below), whose sum is σ = 3392809096320. Its totient is φ = 323124664320.

The previous prime is 1311011031203. The next prime is 1311011031223. The reversal of 1311011031210 is 121301101131.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1311011031210.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28025647 + ... + 28072386.

It is an arithmetic number, because the mean of its divisors is an integer number (53012642130).

Almost surely, 2^{1311011031210} is an apocalyptic number.

1311011031210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311011031210 is an abundant number, since it is smaller than the sum of its proper divisors (2081798065110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1311011031210 is a wasteful number, since it uses less digits than its factorization.

1311011031210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56098103.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 1311011031210 its reverse (121301101131), we get a palindrome (1432312132341).

The spelling of 1311011031210 in words is "one trillion, three hundred eleven billion, eleven million, thirty-one thousand, two hundred ten".