223163491 has 2 divisors, whose sum is σ = 223163492. Its totient is φ = 223163490.

The previous prime is 223163489. The next prime is 223163561. The reversal of 223163491 is 194361322.

223163491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 223163491 - 2¹ = 223163489 is a prime.

It is a super-3 number, since 3×223163491³ (a number of 26 digits) contains 333 as substring.

Together with 223163489, it forms a pair of twin primes.

It is equal to p_12287236 and since 223163491 and 12287236 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (223163441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111581745 + 111581746.

It is an arithmetic number, because the mean of its divisors is an integer number (111581746).

Almost surely, 2^223163491 is an apocalyptic number.

223163491 is a deficient number, since it is larger than the sum of its proper divisors (1).

223163491 is an equidigital number, since it uses as much as digits as its factorization.

223163491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 31.

The square root of 223163491 is about 14938.6576036805. The cubic root of 223163491 is about 606.5608590917.

The spelling of 223163491 in words is "two hundred twenty-three million, one hundred sixty-three thousand, four hundred ninety-one".