143217023 has 4 divisors (see below), whose sum is σ = 143245080. Its totient is φ = 143188968.

The previous prime is 143217017. The next prime is 143217031. The reversal of 143217023 is 320712341.

143217023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 143217023 - 2⁸ = 143216767 is a prime.

It is a super-2 number, since 2×143217023² = 41022231353965058, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 143217023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (143217083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3965 + ... + 17382.

It is an arithmetic number, because the mean of its divisors is an integer number (35811270).

Almost surely, 2^143217023 is an apocalyptic number.

143217023 is a deficient number, since it is larger than the sum of its proper divisors (28057).

143217023 is an equidigital number, since it uses as much as digits as its factorization.

143217023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28056.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 143217023 is about 11967.3314903532. The cubic root of 143217023 is about 523.1965609645.

Adding to 143217023 its reverse (320712341), we get a palindrome (463929364).

The spelling of 143217023 in words is "one hundred forty-three million, two hundred seventeen thousand, twenty-three".