144903213 has 24 divisors (see below), whose sum is σ = 257607168. Its totient is φ = 76432032.

The previous prime is 144903203. The next prime is 144903217. The reversal of 144903213 is 312309441.

144903213 is a `hidden beast` number, since 1 + 449 + 0 + 3 + 213 = 666.

It is not a de Polignac number, because 144903213 - 2⁶ = 144903149 is a prime.

It is a super-2 number, since 2×144903213² = 41993882275446738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144903217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87645 + ... + 89282.

It is an arithmetic number, because the mean of its divisors is an integer number (10733632).

Almost surely, 2^144903213 is an apocalyptic number.

144903213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

144903213 is a deficient number, since it is larger than the sum of its proper divisors (112703955).

144903213 is a wasteful number, since it uses less digits than its factorization.

144903213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176953 (or 176950 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 144903213 is about 12037.5750464950. The cubic root of 144903213 is about 525.2418695051.

The spelling of 144903213 in words is "one hundred forty-four million, nine hundred three thousand, two hundred thirteen".