1311102312 has 64 divisors (see below), whose sum is σ = 3533376000. Its totient is φ = 403017984.

The previous prime is 1311102301. The next prime is 1311102329. The reversal of 1311102312 is 2132011131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1311102291 and 1311102300.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 547614 + ... + 550002.

It is an arithmetic number, because the mean of its divisors is an integer number (55209000).

Almost surely, 2^1311102312 is an apocalyptic number.

1311102312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1311102312 is an abundant number, since it is smaller than the sum of its proper divisors (2222273688).

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

1311102312 is a wasteful number, since it uses less digits than its factorization.

1311102312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4170 (or 4166 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1311102312 is about 36209.1468002216. The cubic root of 1311102312 is about 1094.4909992280.

Adding to 1311102312 its reverse (2132011131), we get a palindrome (3443113443).

The spelling of 1311102312 in words is "one billion, three hundred eleven million, one hundred two thousand, three hundred twelve".