223240091 has 2 divisors, whose sum is σ = 223240092. Its totient is φ = 223240090.

The previous prime is 223240079. The next prime is 223240097. The reversal of 223240091 is 190042322.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223240091 is a prime.

It is a super-3 number, since 3×223240091³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (223240097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111620045 + 111620046.

It is an arithmetic number, because the mean of its divisors is an integer number (111620046).

Almost surely, 2^223240091 is an apocalyptic number.

223240091 is a deficient number, since it is larger than the sum of its proper divisors (1).

223240091 is an equidigital number, since it uses as much as digits as its factorization.

223240091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 223240091 is about 14941.2212017626. The cubic root of 223240091 is about 606.6302510377.

The spelling of 223240091 in words is "two hundred twenty-three million, two hundred forty thousand, ninety-one".