1023210217 has 2 divisors, whose sum is σ = 1023210218. Its totient is φ = 1023210216.

The previous prime is 1023210203. The next prime is 1023210239. The reversal of 1023210217 is 7120123201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 884229696 + 138980521 = 29736^2 + 11789^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1023210217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1023210194 and 1023210203.

It is not a weakly prime, because it can be changed into another prime (1023210917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511605108 + 511605109.

It is an arithmetic number, because the mean of its divisors is an integer number (511605109).

Almost surely, 2^1023210217 is an apocalyptic number.

It is an amenable number.

1023210217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023210217 is an equidigital number, since it uses as much as digits as its factorization.

1023210217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 1023210217 is about 31987.6572602621. The cubic root of 1023210217 is about 1007.6776419581.

Adding to 1023210217 its reverse (7120123201), we get a palindrome (8143333418).

It can be divided in two parts, 10232 and 10217, that added together give a square (20449 = 143²).

The spelling of 1023210217 in words is "one billion, twenty-three million, two hundred ten thousand, two hundred seventeen".