1311401 has 8 divisors (see below), whose sum is σ = 1614144. Its totient is φ = 1037520.

The previous prime is 1311383. The next prime is 1311403. The reversal of 1311401 is 1041131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1311401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7115 + ... + 7296.

It is an arithmetic number, because the mean of its divisors is an integer number (201768).

2^1311401 is an apocalyptic number.

It is an amenable number.

1311401 is a deficient number, since it is larger than the sum of its proper divisors (302743).

1311401 is a wasteful number, since it uses less digits than its factorization.

1311401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14431.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1311401 is about 1145.1641803689. The cubic root of 1311401 is about 109.4574106525.

Subtracting from 1311401 its sum of digits (11), we obtain a triangular number (1311390 = T₁₆₁₉).

Adding to 1311401 its reverse (1041131), we get a palindrome (2352532).

The spelling of 1311401 in words is "one million, three hundred eleven thousand, four hundred one".