233221273 has 2 divisors, whose sum is σ = 233221274. Its totient is φ = 233221272.

The previous prime is 233221237. The next prime is 233221279. The reversal of 233221273 is 372122332.

Together with previous prime (233221237) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134258569 + 98962704 = 11587^2 + 9948^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233221273 is a prime.

It is not a weakly prime, because it can be changed into another prime (233221279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116610636 + 116610637.

It is an arithmetic number, because the mean of its divisors is an integer number (116610637).

Almost surely, 2^233221273 is an apocalyptic number.

It is an amenable number.

233221273 is a deficient number, since it is larger than the sum of its proper divisors (1).

233221273 is an equidigital number, since it uses as much as digits as its factorization.

233221273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 25.

The square root of 233221273 is about 15271.5838405844. The cubic root of 233221273 is about 615.5396791856.

The spelling of 233221273 in words is "two hundred thirty-three million, two hundred twenty-one thousand, two hundred seventy-three".