144509213 has 2 divisors, whose sum is σ = 144509214. Its totient is φ = 144509212.

The previous prime is 144509179. The next prime is 144509273. The reversal of 144509213 is 312905441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108951844 + 35557369 = 10438^2 + 5963^2 .

It is an emirp because it is prime and its reverse (312905441) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144509213 is a prime.

It is equal to p_8152580 and since 144509213 and 8152580 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (144509273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72254606 + 72254607.

It is an arithmetic number, because the mean of its divisors is an integer number (72254607).

Almost surely, 2^144509213 is an apocalyptic number.

It is an amenable number.

144509213 is a deficient number, since it is larger than the sum of its proper divisors (1).

144509213 is an equidigital number, since it uses as much as digits as its factorization.

144509213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 144509213 is about 12021.1984843442. The cubic root of 144509213 is about 524.7653833010.

The spelling of 144509213 in words is "one hundred forty-four million, five hundred nine thousand, two hundred thirteen".