223913 has 6 divisors (see below), whose sum is σ = 232362. Its totient is φ = 215760.

The previous prime is 223903. The next prime is 223919. The reversal of 223913 is 319322.

It can be written as a sum of positive squares in only one way, i.e., 162409 + 61504 = 403^2 + 248^2 .

It is not a de Polignac number, because 223913 - 2⁶ = 223849 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (223919) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 845 + ... + 1077.

It is an arithmetic number, because the mean of its divisors is an integer number (38727).

2²²³⁹¹³ is an apocalyptic number.

It is an amenable number.

223913 is a deficient number, since it is larger than the sum of its proper divisors (8449).

223913 is an equidigital number, since it uses as much as digits as its factorization.

223913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295 (or 264 counting only the distinct ones).

The product of its digits is 324, while the sum is 20.

The square root of 223913 is about 473.1944631967. The cubic root of 223913 is about 60.7239158229.

The spelling of 223913 in words is "two hundred twenty-three thousand, nine hundred thirteen".