1311234 has 16 divisors (see below), whose sum is σ = 2655072. Its totient is φ = 431648.

The previous prime is 1311229. The next prime is 1311239. The reversal of 1311234 is 4321131.

It is an interprime number because it is at equal distance from previous prime (1311229) and next prime (1311239).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311239) 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, 819 + ... + 1814.

It is an arithmetic number, because the mean of its divisors is an integer number (165942).

2^1311234 is an apocalyptic number.

1311234 is an abundant number, since it is smaller than the sum of its proper divisors (1343838).

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

1311234 is a wasteful number, since it uses less digits than its factorization.

1311234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2721.

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

The square root of 1311234 is about 1145.0912627385. The cubic root of 1311234 is about 109.4527641806.

Adding to 1311234 its reverse (4321131), we get a palindrome (5632365).

The spelling of 1311234 in words is "one million, three hundred eleven thousand, two hundred thirty-four".