1020223517 has 2 divisors, whose sum is σ = 1020223518. Its totient is φ = 1020223516.

The previous prime is 1020223511. The next prime is 1020223573. The reversal of 1020223517 is 7153220201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1007364121 + 12859396 = 31739^2 + 3586^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020223517 - 2⁶ = 1020223453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020223492 and 1020223501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020223511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510111758 + 510111759.

It is an arithmetic number, because the mean of its divisors is an integer number (510111759).

Almost surely, 2^1020223517 is an apocalyptic number.

It is an amenable number.

1020223517 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020223517 is an equidigital number, since it uses as much as digits as its factorization.

1020223517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 1020223517 is about 31940.9379480315. The cubic root of 1020223517 is about 1006.6962327154.

Adding to 1020223517 its reverse (7153220201), we get a palindrome (8173443718).

The spelling of 1020223517 in words is "one billion, twenty million, two hundred twenty-three thousand, five hundred seventeen".