146232217 has 4 divisors (see below), whose sum is σ = 146565760. Its totient is φ = 145898676.

The previous prime is 146232211. The next prime is 146232241. The reversal of 146232217 is 712232641.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 712232641 = 14563 ⋅48907.

It is a cyclic number.

It is not a de Polignac number, because 146232217 - 2³ = 146232209 is a prime.

It is a super-2 number, since 2×146232217² = 42767722577470178, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146232211) 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, 166113 + ... + 166990.

It is an arithmetic number, because the mean of its divisors is an integer number (36641440).

Almost surely, 2^146232217 is an apocalyptic number.

It is an amenable number.

146232217 is a deficient number, since it is larger than the sum of its proper divisors (333543).

146232217 is an equidigital number, since it uses as much as digits as its factorization.

146232217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333542.

The product of its digits is 4032, while the sum is 28.

The square root of 146232217 is about 12092.6513635348. The cubic root of 146232217 is about 526.8427662910.

Adding to 146232217 its reverse (712232641), we get a palindrome (858464858).

The spelling of 146232217 in words is "one hundred forty-six million, two hundred thirty-two thousand, two hundred seventeen".