223856811 has 16 divisors (see below), whose sum is σ = 331877920. Its totient is φ = 149130720.

The previous prime is 223856791. The next prime is 223856819. The reversal of 223856811 is 118658322.

It is a happy number.

It is not a de Polignac number, because 223856811 - 2¹⁸ = 223594667 is a prime.

It is a super-2 number, since 2×223856811² = 100223743662179442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223856819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58101 + ... + 61833.

It is an arithmetic number, because the mean of its divisors is an integer number (20742370).

Almost surely, 2^223856811 is an apocalyptic number.

223856811 is a deficient number, since it is larger than the sum of its proper divisors (108021109).

223856811 is a wasteful number, since it uses less digits than its factorization.

223856811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5963 (or 5957 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 223856811 is about 14961.8451736409. The cubic root of 223856811 is about 607.1883602027.

It can be divided in two parts, 2238 and 56811, that added together give a 10-th power (59049 = 3¹⁰).

The spelling of 223856811 in words is "two hundred twenty-three million, eight hundred fifty-six thousand, eight hundred eleven".