223534161 has 20 divisors (see below), whose sum is σ = 334324452. Its totient is φ = 148843008.

The previous prime is 223534159. The next prime is 223534163. The reversal of 223534161 is 161435322.

223534161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (223534159) and next prime (223534163).

It can be written as a sum of positive squares in 2 ways, for example, as 62726400 + 160807761 = 7920^2 + 12681^2 .

It is not a de Polignac number, because 223534161 - 2¹ = 223534159 is a prime.

It is a super-2 number, since 2×223534161² = 99935042267947842, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (223534163) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 124905 + ... + 126681.

Almost surely, 2^223534161 is an apocalyptic number.

It is an amenable number.

223534161 is a deficient number, since it is larger than the sum of its proper divisors (110790291).

223534161 is a wasteful number, since it uses less digits than its factorization.

223534161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3342 (or 3333 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 223534161 is about 14951.0588588233. The cubic root of 223534161 is about 606.8965017273.

Adding to 223534161 its reverse (161435322), we get a palindrome (384969483).

The spelling of 223534161 in words is "two hundred twenty-three million, five hundred thirty-four thousand, one hundred sixty-one".