144932213 has 4 divisors (see below), whose sum is σ = 145448268. Its totient is φ = 144416160.

The previous prime is 144932201. The next prime is 144932233. The reversal of 144932213 is 312239441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312239441 = 863 ⋅361807.

It can be written as a sum of positive squares in 2 ways, for example, as 96393124 + 48539089 = 9818^2 + 6967^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144932213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144932233) 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, 257606 + ... + 258167.

It is an arithmetic number, because the mean of its divisors is an integer number (36362067).

Almost surely, 2^144932213 is an apocalyptic number.

It is an amenable number.

144932213 is a deficient number, since it is larger than the sum of its proper divisors (516055).

144932213 is an equidigital number, since it uses as much as digits as its factorization.

144932213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516054.

The product of its digits is 5184, while the sum is 29.

The square root of 144932213 is about 12038.7795477781. The cubic root of 144932213 is about 525.2769066812.

The spelling of 144932213 in words is "one hundred forty-four million, nine hundred thirty-two thousand, two hundred thirteen".