1020217623 has 8 divisors (see below), whose sum is σ = 1360571136. Its totient is φ = 680004600.

The previous prime is 1020217621. The next prime is 1020217631. The reversal of 1020217623 is 3267120201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1020217623 - 2¹ = 1020217621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020217593 and 1020217602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020217621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16813 + ... + 48198.

It is an arithmetic number, because the mean of its divisors is an integer number (170071392).

Almost surely, 2^1020217623 is an apocalyptic number.

1020217623 is a deficient number, since it is larger than the sum of its proper divisors (340353513).

1020217623 is an equidigital number, since it uses as much as digits as its factorization.

1020217623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70245.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 1020217623 is about 31940.8456838575. The cubic root of 1020217623 is about 1006.6942940948.

Adding to 1020217623 its reverse (3267120201), we get a palindrome (4287337824).

The spelling of 1020217623 in words is "one billion, twenty million, two hundred seventeen thousand, six hundred twenty-three".