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1223023 = 2714513
BaseRepresentation
bin100101010100101101111
32022010200011
410222211233
5303114043
642114051
713252444
oct4524557
92263604
101223023
1176596a
124ab927
1333a8a9
1423b9cb
1519259d
hex12a96f

1223023 has 4 divisors (see below), whose sum is σ = 1227808. Its totient is φ = 1218240.

The previous prime is 1223021. The next prime is 1223029. The reversal of 1223023 is 3203221.

It is a happy number.

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 1223023 - 21 = 1223021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1222994 and 1223012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223021) 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, 1986 + ... + 2527.

It is an arithmetic number, because the mean of its divisors is an integer number (306952).

21223023 is an apocalyptic number.

1223023 is a deficient number, since it is larger than the sum of its proper divisors (4785).

1223023 is an equidigital number, since it uses as much as digits as its factorization.

1223023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4784.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 1223023 is about 1105.9037028602. The cubic root of 1223023 is about 106.9411561041.

Adding to 1223023 its reverse (3203221), we get a palindrome (4426244).

The spelling of 1223023 in words is "one million, two hundred twenty-three thousand, twenty-three".

Divisors: 1 271 4513 1223023