1123423473 has 4 divisors (see below), whose sum is σ = 1497897968. Its totient is φ = 748948980.

The previous prime is 1123423459. The next prime is 1123423487. The reversal of 1123423473 is 3743243211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1123423459) and next prime (1123423487).

It is not a de Polignac number, because 1123423473 - 2⁶ = 1123423409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1123423473.

It is not an unprimeable number, because it can be changed into a prime (1123423453) 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, 187237243 + ... + 187237248.

It is an arithmetic number, because the mean of its divisors is an integer number (374474492).

Almost surely, 2^1123423473 is an apocalyptic number.

It is an amenable number.

1123423473 is a deficient number, since it is larger than the sum of its proper divisors (374474495).

1123423473 is an equidigital number, since it uses as much as digits as its factorization.

1123423473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374474494.

The product of its digits is 12096, while the sum is 30.

The square root of 1123423473 is about 33517.5099462952. The cubic root of 1123423473 is about 1039.5558609585. Note that the first 3 decimals are identical.

Adding to 1123423473 its reverse (3743243211), we get a palindrome (4866666684).

The spelling of 1123423473 in words is "one billion, one hundred twenty-three million, four hundred twenty-three thousand, four hundred seventy-three".