1111023 has 8 divisors (see below), whose sum is σ = 1646000. Its totient is φ = 740664.

The previous prime is 1111021. The next prime is 1111031. The reversal of 1111023 is 3201111.

It is not a de Polignac number, because 1111023 - 2¹ = 1111021 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1110996 and 1111014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111021) 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, 20548 + ... + 20601.

It is an arithmetic number, because the mean of its divisors is an integer number (205750).

2^1111023 is an apocalyptic number.

1111023 is a deficient number, since it is larger than the sum of its proper divisors (534977).

1111023 is an equidigital number, since it uses as much as digits as its factorization.

1111023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41158 (or 41152 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1111023 is about 1054.0507577911. The cubic root of 1111023 is about 103.5716789757.

Adding to 1111023 its reverse (3201111), we get a palindrome (4312134).

The spelling of 1111023 in words is "one million, one hundred eleven thousand, twenty-three".