145212323 has 4 divisors (see below), whose sum is σ = 145306560. Its totient is φ = 145118088.

The previous prime is 145212293. The next prime is 145212359. The reversal of 145212323 is 323212541.

145212323 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 145212323 - 2⁶ = 145212259 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145212373) 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, 44768 + ... + 47901.

It is an arithmetic number, because the mean of its divisors is an integer number (36326640).

Almost surely, 2^145212323 is an apocalyptic number.

145212323 is a deficient number, since it is larger than the sum of its proper divisors (94237).

145212323 is an equidigital number, since it uses as much as digits as its factorization.

145212323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94236.

The product of its digits is 1440, while the sum is 23.

The square root of 145212323 is about 12050.4075864678. The cubic root of 145212323 is about 525.6150892095.

Adding to 145212323 its reverse (323212541), we get a palindrome (468424864).

The spelling of 145212323 in words is "one hundred forty-five million, two hundred twelve thousand, three hundred twenty-three".