1720113223 has 8 divisors (see below), whose sum is σ = 1731352896. Its totient is φ = 1708888800.

The previous prime is 1720113211. The next prime is 1720113229. The reversal of 1720113223 is 3223110271.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1720113223 - 2²⁵ = 1686558791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1720113194 and 1720113203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1720113229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298338 + ... + 304048.

It is an arithmetic number, because the mean of its divisors is an integer number (216419112).

Almost surely, 2^1720113223 is an apocalyptic number.

1720113223 is a deficient number, since it is larger than the sum of its proper divisors (11239673).

1720113223 is a wasteful number, since it uses less digits than its factorization.

1720113223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7625.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1720113223 is about 41474.2477086686. The cubic root of 1720113223 is about 1198.1715726354.

Adding to 1720113223 its reverse (3223110271), we get a palindrome (4943223494).

The spelling of 1720113223 in words is "one billion, seven hundred twenty million, one hundred thirteen thousand, two hundred twenty-three".