1320112311 has 16 divisors (see below), whose sum is σ = 2023233024. Its totient is φ = 749987424.

The previous prime is 1320112289. The next prime is 1320112327. The reversal of 1320112311 is 1132110231.

It is a happy number.

It is not a de Polignac number, because 1320112311 - 2⁵ = 1320112279 is a prime.

It is a super-3 number, since 3×1320112311³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320112411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178051 + ... + 185316.

It is an arithmetic number, because the mean of its divisors is an integer number (126452064).

Almost surely, 2^1320112311 is an apocalyptic number.

1320112311 is a deficient number, since it is larger than the sum of its proper divisors (703120713).

1320112311 is a wasteful number, since it uses less digits than its factorization.

1320112311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363550.

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

The square root of 1320112311 is about 36333.3498455620. The cubic root of 1320112311 is about 1096.9924209228.

Adding to 1320112311 its reverse (1132110231), we get a palindrome (2452222542).

The spelling of 1320112311 in words is "one billion, three hundred twenty million, one hundred twelve thousand, three hundred eleven".