223913381 has 8 divisors (see below), whose sum is σ = 231300984. Its totient is φ = 216596160.

The previous prime is 223913377. The next prime is 223913399. The reversal of 223913381 is 183319322.

223913381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 135722500 + 88190881 = 11650^2 + 9391^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 223913381 - 2² = 223913377 is a prime.

It is a super-2 number, since 2×223913381² = 100274404381702322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223913581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11090 + ... + 23891.

It is an arithmetic number, because the mean of its divisors is an integer number (28912623).

Almost surely, 2^223913381 is an apocalyptic number.

It is an amenable number.

223913381 is a deficient number, since it is larger than the sum of its proper divisors (7387603).

223913381 is a wasteful number, since it uses less digits than its factorization.

223913381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35191.

The product of its digits is 7776, while the sum is 32.

The square root of 223913381 is about 14963.7355296062. The cubic root of 223913381 is about 607.2395026457.

The spelling of 223913381 in words is "two hundred twenty-three million, nine hundred thirteen thousand, three hundred eighty-one".