1312111333 has 8 divisors (see below), whose sum is σ = 1414700000. Its totient is φ = 1209759408.

The previous prime is 1312111321. The next prime is 1312111343. The reversal of 1312111333 is 3331112131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1312111333 - 2¹³ = 1312103141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1312111333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312111303) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 47583 + ... + 69916.

It is an arithmetic number, because the mean of its divisors is an integer number (176837500).

Almost surely, 2^1312111333 is an apocalyptic number.

1312111333 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1312111333 is a deficient number, since it is larger than the sum of its proper divisors (102588667).

1312111333 is a wasteful number, since it uses less digits than its factorization.

1312111333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118371.

The product of its digits is 162, while the sum is 19.

The square root of 1312111333 is about 36223.0773540846. The cubic root of 1312111333 is about 1094.7716997267.

Adding to 1312111333 its reverse (3331112131), we get a palindrome (4643223464).

The spelling of 1312111333 in words is "one billion, three hundred twelve million, one hundred eleven thousand, three hundred thirty-three".