1312111 has 8 divisors (see below), whose sum is σ = 1408320. Its totient is φ = 1218048.

The previous prime is 1312093. The next prime is 1312133. The reversal of 1312111 is 1112131.

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

It is a cyclic number.

It is not a de Polignac number, because 1312111 - 2⁵ = 1312079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 855 + ... + 1831.

It is an arithmetic number, because the mean of its divisors is an integer number (176040).

2^1312111 is an apocalyptic number.

1312111 is a deficient number, since it is larger than the sum of its proper divisors (96209).

1312111 is an equidigital number, since it uses as much as digits as its factorization.

1312111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073.

The product of its digits is 6, while the sum is 10.

The square root of 1312111 is about 1145.4741376391. The cubic root of 1312111 is about 109.4771607113.

Adding to 1312111 its reverse (1112131), we get a palindrome (2424242).

The spelling of 1312111 in words is "one million, three hundred twelve thousand, one hundred eleven".