1223361 has 6 divisors (see below), whose sum is σ = 1767090. Its totient is φ = 815568.

The previous prime is 1223357. The next prime is 1223381. The reversal of 1223361 is 1633221.

It can be written as a sum of positive squares in only one way, i.e., 1199025 + 24336 = 1095^2 + 156^2 .

It is not a de Polignac number, because 1223361 - 2² = 1223357 is a prime.

It is a super-2 number, since 2×1223361² = 2993224272642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1223311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67956 + ... + 67973.

It is an arithmetic number, because the mean of its divisors is an integer number (294515).

2^1223361 is an apocalyptic number.

It is an amenable number.

1223361 is a deficient number, since it is larger than the sum of its proper divisors (543729).

1223361 is a wasteful number, since it uses less digits than its factorization.

1223361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135935 (or 135932 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 1223361 is about 1106.0565085022. The cubic root of 1223361 is about 106.9510067723.

Adding to 1223361 its reverse (1633221), we get a palindrome (2856582).

The spelling of 1223361 in words is "one million, two hundred twenty-three thousand, three hundred sixty-one".