1311111211310 has 32 divisors (see below), whose sum is σ = 2371942579104. Its totient is φ = 521792208000.

The previous prime is 1311111211301. The next prime is 1311111211321. The reversal of 1311111211310 is 131121111131.

It is a happy number.

It is a super-2 number, since 2×1311111211310² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6614240 + ... + 6809580.

It is an arithmetic number, because the mean of its divisors is an integer number (74123205597).

Almost surely, 2^{1311111211310} is an apocalyptic number.

1311111211310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311111211310 is a deficient number, since it is larger than the sum of its proper divisors (1060831367794).

1311111211310 is a wasteful number, since it uses less digits than its factorization.

1311111211310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198740.

The product of its (nonzero) digits is 18, while the sum is 17.

Adding to 1311111211310 its reverse (131121111131), we get a palindrome (1442232322441).

The spelling of 1311111211310 in words is "one trillion, three hundred eleven billion, one hundred eleven million, two hundred eleven thousand, three hundred ten".