223197041917 has 2 divisors, whose sum is σ = 223197041918. Its totient is φ = 223197041916.

The previous prime is 223197041867. The next prime is 223197041923. The reversal of 223197041917 is 719140791322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188656447716 + 34540594201 = 434346^2 + 185851^2 .

It is a cyclic number.

It is not a de Polignac number, because 223197041917 - 2⁷ = 223197041789 is a prime.

It is a super-3 number, since 3×223197041917³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223197048917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111598520958 + 111598520959.

It is an arithmetic number, because the mean of its divisors is an integer number (111598520959).

Almost surely, 2^223197041917 is an apocalyptic number.

It is an amenable number.

223197041917 is a deficient number, since it is larger than the sum of its proper divisors (1).

223197041917 is an equidigital number, since it uses as much as digits as its factorization.

223197041917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 46.

The spelling of 223197041917 in words is "two hundred twenty-three billion, one hundred ninety-seven million, forty-one thousand, nine hundred seventeen".