223123939 has 2 divisors, whose sum is σ = 223123940. Its totient is φ = 223123938.

The previous prime is 223123931. The next prime is 223123969. The reversal of 223123939 is 939321322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 223123939 - 2³ = 223123931 is a prime.

It is a super-3 number, since 3×223123939³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (223123931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111561969 + 111561970.

It is an arithmetic number, because the mean of its divisors is an integer number (111561970).

Almost surely, 2^223123939 is an apocalyptic number.

223123939 is a deficient number, since it is larger than the sum of its proper divisors (1).

223123939 is an equidigital number, since it uses as much as digits as its factorization.

223123939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 34.

The square root of 223123939 is about 14937.3337312922. Note that the first 3 decimals coincide. The cubic root of 223123939 is about 606.5250227153.

The spelling of 223123939 in words is "two hundred twenty-three million, one hundred twenty-three thousand, nine hundred thirty-nine".