1226312 has 32 divisors (see below), whose sum is σ = 2488320. Its totient is φ = 564480.

The previous prime is 1226311. The next prime is 1226321. The reversal of 1226312 is 2136221.

It is a super-2 number, since 2×1226312² = 3007682242688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (1226311) 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, 9593 + ... + 9719.

It is an arithmetic number, because the mean of its divisors is an integer number (77760).

2^1226312 is an apocalyptic number.

It is an amenable number.

1226312 is an abundant number, since it is smaller than the sum of its proper divisors (1262008).

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

1226312 is a wasteful number, since it uses less digits than its factorization.

1226312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 217 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 1226312 is about 1107.3897236294. The cubic root of 1226312 is about 107.0369337082.

Subtracting 1226312 from its reverse (2136221), we obtain a palindrome (909909).

The spelling of 1226312 in words is "one million, two hundred twenty-six thousand, three hundred twelve".