223201031161 has 2 divisors, whose sum is σ = 223201031162. Its totient is φ = 223201031160.

The previous prime is 223201031101. The next prime is 223201031201. The reversal of 223201031161 is 161130102322.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201640513936 + 21560517225 = 449044^2 + 146835^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223201031161 is a prime.

It is a super-3 number, since 3×223201031161³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (223201031101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111600515580 + 111600515581.

It is an arithmetic number, because the mean of its divisors is an integer number (111600515581).

Almost surely, 2^223201031161 is an apocalyptic number.

It is an amenable number.

223201031161 is a deficient number, since it is larger than the sum of its proper divisors (1).

223201031161 is an equidigital number, since it uses as much as digits as its factorization.

223201031161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 223201031161 its reverse (161130102322), we get a palindrome (384331133483).

The spelling of 223201031161 in words is "two hundred twenty-three billion, two hundred one million, thirty-one thousand, one hundred sixty-one".