144400213 has 4 divisors (see below), whose sum is σ = 144870880. Its totient is φ = 143929548.

The previous prime is 144400183. The next prime is 144400241. The reversal of 144400213 is 312004441.

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: 312004441 = 7 ⋅44572063.

It is a cyclic number.

It is not a de Polignac number, because 144400213 - 2¹⁷ = 144269141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144400253) 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, 234873 + ... + 235486.

It is an arithmetic number, because the mean of its divisors is an integer number (36217720).

Almost surely, 2^144400213 is an apocalyptic number.

It is an amenable number.

144400213 is a deficient number, since it is larger than the sum of its proper divisors (470667).

144400213 is an equidigital number, since it uses as much as digits as its factorization.

144400213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470666.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 144400213 is about 12016.6639713358. The cubic root of 144400213 is about 524.6334105983.

Adding to 144400213 its reverse (312004441), we get a palindrome (456404654).

The spelling of 144400213 in words is "one hundred forty-four million, four hundred thousand, two hundred thirteen".