145203023 has 12 divisors (see below), whose sum is σ = 171292752. Its totient is φ = 122703840.

The previous prime is 145203011. The next prime is 145203031. The reversal of 145203023 is 320302541.

It is a happy number.

It is not a de Polignac number, because 145203023 - 2¹² = 145198927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145202986 and 145203004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145203043) 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 11 ways as a sum of consecutive naturals, for example, 17390 + ... + 24347.

It is an arithmetic number, because the mean of its divisors is an integer number (14274396).

Almost surely, 2^145203023 is an apocalyptic number.

145203023 is a deficient number, since it is larger than the sum of its proper divisors (26089729).

145203023 is an equidigital number, since it uses as much as digits as its factorization.

145203023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41822 (or 41815 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 145203023 is about 12050.0217012253. The cubic root of 145203023 is about 525.6038681125.

Adding to 145203023 its reverse (320302541), we get a palindrome (465505564).

The spelling of 145203023 in words is "one hundred forty-five million, two hundred three thousand, twenty-three".