1023142217 has 2 divisors, whose sum is σ = 1023142218. Its totient is φ = 1023142216.

The previous prime is 1023142171. The next prime is 1023142223. The reversal of 1023142217 is 7122413201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 553943296 + 469198921 = 23536^2 + 21661^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1023142217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1023142192 and 1023142201.

It is not a weakly prime, because it can be changed into another prime (1023142247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511571108 + 511571109.

It is an arithmetic number, because the mean of its divisors is an integer number (511571109).

Almost surely, 2^1023142217 is an apocalyptic number.

It is an amenable number.

1023142217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023142217 is an equidigital number, since it uses as much as digits as its factorization.

1023142217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 1023142217 is about 31986.5943326263. The cubic root of 1023142217 is about 1007.6553188823.

Adding to 1023142217 its reverse (7122413201), we get a palindrome (8145555418).

The spelling of 1023142217 in words is "one billion, twenty-three million, one hundred forty-two thousand, two hundred seventeen".