1101623 has 4 divisors (see below), whose sum is σ = 1139640. Its totient is φ = 1063608.

The previous prime is 1101619. The next prime is 1101641. The reversal of 1101623 is 3261011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1101623 - 2² = 1101619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101598 and 1101607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18965 + ... + 19022.

It is an arithmetic number, because the mean of its divisors is an integer number (284910).

2^1101623 is an apocalyptic number.

1101623 is a deficient number, since it is larger than the sum of its proper divisors (38017).

1101623 is an equidigital number, since it uses as much as digits as its factorization.

1101623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38016.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1101623 is about 1049.5822978690. The cubic root of 1101623 is about 103.2787560097.

Adding to 1101623 its reverse (3261011), we get a palindrome (4362634).

The spelling of 1101623 in words is "one million, one hundred one thousand, six hundred twenty-three".