1143623 has 12 divisors (see below), whose sum is σ = 1269288. Its totient is φ = 1029600.

The previous prime is 1143619. The next prime is 1143643. The reversal of 1143623 is 3263411.

It is not a de Polignac number, because 1143623 - 2² = 1143619 is a prime.

It is a super-2 number, since 2×1143623² = 2615747132258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1143595 and 1143604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11273 + ... + 11373.

It is an arithmetic number, because the mean of its divisors is an integer number (105774).

2^1143623 is an apocalyptic number.

1143623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1143623 is a deficient number, since it is larger than the sum of its proper divisors (125665).

1143623 is a wasteful number, since it uses less digits than its factorization.

1143623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194 (or 181 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 1143623 is about 1069.4031045401. The cubic root of 1143623 is about 104.5749407119.

It can be divided in two parts, 11 and 43623, that added together give a palindrome (43634).

The spelling of 1143623 in words is "one million, one hundred forty-three thousand, six hundred twenty-three".