1311112120 has 32 divisors (see below), whose sum is σ = 2990419920. Its totient is φ = 517259520.

The previous prime is 1311112093. The next prime is 1311112139. The reversal of 1311112120 is 212111131.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1311112120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221586 + ... + 227425.

Almost surely, 2^1311112120 is an apocalyptic number.

1311112120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311112120 is an abundant number, since it is smaller than the sum of its proper divisors (1679307800).

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

1311112120 is a wasteful number, since it uses less digits than its factorization.

1311112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449095 (or 449091 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1311112120 is about 36209.2822353606. The cubic root of 1311112120 is about 1094.4937284178.

Adding to 1311112120 its reverse (212111131), we get a palindrome (1523223251).

The spelling of 1311112120 in words is "one billion, three hundred eleven million, one hundred twelve thousand, one hundred twenty".