1311342 has 16 divisors (see below), whose sum is σ = 2760960. Its totient is φ = 414072.

The previous prime is 1311341. The next prime is 1311353. The reversal of 1311342 is 2431131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311341) 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, 5638 + ... + 5865.

It is an arithmetic number, because the mean of its divisors is an integer number (172560).

2^1311342 is an apocalyptic number.

1311342 is an abundant number, since it is smaller than the sum of its proper divisors (1449618).

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

1311342 is a wasteful number, since it uses less digits than its factorization.

1311342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11527.

The product of its digits is 72, while the sum is 15.

The square root of 1311342 is about 1145.1384195808. The cubic root of 1311342 is about 109.4557691296.

Adding to 1311342 its reverse (2431131), we get a palindrome (3742473).

It can be divided in two parts, 1311 and 342, that added together give a triangular number (1653 = T₅₇).

The spelling of 1311342 in words is "one million, three hundred eleven thousand, three hundred forty-two".