427217233 has 2 divisors, whose sum is σ = 427217234. Its totient is φ = 427217232.

The previous prime is 427217213. The next prime is 427217237. The reversal of 427217233 is 332712724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 339738624 + 87478609 = 18432^2 + 9353^2 .

It is a cyclic number.

It is not a de Polignac number, because 427217233 - 2⁹ = 427216721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 427217195 and 427217204.

It is not a weakly prime, because it can be changed into another prime (427217237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213608616 + 213608617.

It is an arithmetic number, because the mean of its divisors is an integer number (213608617).

Almost surely, 2^427217233 is an apocalyptic number.

It is an amenable number.

427217233 is a deficient number, since it is larger than the sum of its proper divisors (1).

427217233 is an equidigital number, since it uses as much as digits as its factorization.

427217233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14112, while the sum is 31.

The square root of 427217233 is about 20669.2339722593. The cubic root of 427217233 is about 753.1524981449.

Adding to 427217233 its reverse (332712724), we get a palindrome (759929957).

The spelling of 427217233 in words is "four hundred twenty-seven million, two hundred seventeen thousand, two hundred thirty-three".