1123623 has 6 divisors (see below), whose sum is σ = 1623024. Its totient is φ = 749076.

The previous prime is 1123621. The next prime is 1123631. The reversal of 1123623 is 3263211.

It is not a de Polignac number, because 1123623 - 2¹ = 1123621 is a prime.

It is a super-2 number, since 2×1123623² = 2525057292258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1123596 and 1123605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123621) 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, 62415 + ... + 62432.

It is an arithmetic number, because the mean of its divisors is an integer number (270504).

2^1123623 is an apocalyptic number.

1123623 is a deficient number, since it is larger than the sum of its proper divisors (499401).

1123623 is a wasteful number, since it uses less digits than its factorization.

1123623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124853 (or 124850 counting only the distinct ones).

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

The square root of 1123623 is about 1060.0108490011. The cubic root of 1123623 is about 103.9617401179.

Adding to 1123623 its reverse (3263211), we get a palindrome (4386834).

The spelling of 1123623 in words is "one million, one hundred twenty-three thousand, six hundred twenty-three".