223870081 has 2 divisors, whose sum is σ = 223870082. Its totient is φ = 223870080.

The previous prime is 223870069. The next prime is 223870099. The reversal of 223870081 is 180078322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150185025 + 73685056 = 12255^2 + 8584^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223870081 is a prime.

It is a super-2 number, since 2×223870081² = 100235626333893122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (223870021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111935040 + 111935041.

It is an arithmetic number, because the mean of its divisors is an integer number (111935041).

Almost surely, 2^223870081 is an apocalyptic number.

It is an amenable number.

223870081 is a deficient number, since it is larger than the sum of its proper divisors (1).

223870081 is an equidigital number, since it uses as much as digits as its factorization.

223870081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 223870081 is about 14962.2886284151. The cubic root of 223870081 is about 607.2003577981.

The spelling of 223870081 in words is "two hundred twenty-three million, eight hundred seventy thousand, eighty-one".