223409297123 has 4 divisors (see below), whose sum is σ = 233122744848. Its totient is φ = 213695849400.

The previous prime is 223409297093. The next prime is 223409297183. The reversal of 223409297123 is 321792904322.

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 223409297123 - 2⁸ = 223409296867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223409297183) 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, 4856723828 + ... + 4856723873.

It is an arithmetic number, because the mean of its divisors is an integer number (58280686212).

Almost surely, 2^223409297123 is an apocalyptic number.

223409297123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

223409297123 is a deficient number, since it is larger than the sum of its proper divisors (9713447725).

223409297123 is an equidigital number, since it uses as much as digits as its factorization.

223409297123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9713447724.

The product of its (nonzero) digits is 326592, while the sum is 44.

The spelling of 223409297123 in words is "two hundred twenty-three billion, four hundred nine million, two hundred ninety-seven thousand, one hundred twenty-three".