1212318 has 24 divisors (see below), whose sum is σ = 2684448. Its totient is φ = 395232.

The previous prime is 1212301. The next prime is 1212319. The reversal of 1212318 is 8132121.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 1212318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130 + ... + 1562.

It is an arithmetic number, because the mean of its divisors is an integer number (111852).

2^1212318 is an apocalyptic number.

1212318 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1212318 is an abundant number, since it is smaller than the sum of its proper divisors (1472130).

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

1212318 is a wasteful number, since it uses less digits than its factorization.

1212318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488 (or 1485 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1212318 is about 1101.0531322330. The cubic root of 1212318 is about 106.6282261658.

Adding to 1212318 its reverse (8132121), we get a palindrome (9344439).

The spelling of 1212318 in words is "one million, two hundred twelve thousand, three hundred eighteen".