1311230 has 16 divisors (see below), whose sum is σ = 2463264. Its totient is φ = 501600.

The previous prime is 1311229. The next prime is 1311239. The reversal of 1311230 is 321131.

It is a super-2 number, since 2×1311230² = 3438648225800, which contains 22 as substring.

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, 2621 + ... + 3080.

It is an arithmetic number, because the mean of its divisors is an integer number (153954).

2^1311230 is an apocalyptic number.

1311230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311230 is a deficient number, since it is larger than the sum of its proper divisors (1152034).

1311230 is a wasteful number, since it uses less digits than its factorization.

1311230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5731.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 1311230 is about 1145.0895161515. The cubic root of 1311230 is about 109.4526528830.

Adding to 1311230 its reverse (321131), we get a palindrome (1632361).

Subtracting from 1311230 its reverse (321131), we obtain a palindrome (990099).

The spelling of 1311230 in words is "one million, three hundred eleven thousand, two hundred thirty".