3144405221 has 4 divisors (see below), whose sum is σ = 3329370252. Its totient is φ = 2959440192.

The previous prime is 3144405217. The next prime is 3144405223. The reversal of 3144405221 is 1225044413.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2908444900 + 235960321 = 53930^2 + 15361^2 .

It is a cyclic number.

It is not a de Polignac number, because 3144405221 - 2² = 3144405217 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 (3144405223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92482490 + ... + 92482523.

It is an arithmetic number, because the mean of its divisors is an integer number (832342563).

Almost surely, 2^3144405221 is an apocalyptic number.

It is an amenable number.

3144405221 is a deficient number, since it is larger than the sum of its proper divisors (184965031).

3144405221 is a wasteful number, since it uses less digits than its factorization.

3144405221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184965030.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 3144405221 is about 56074.9963976816. The cubic root of 3144405221 is about 1465.0288246182.

Adding to 3144405221 its reverse (1225044413), we get a palindrome (4369449634).

The spelling of 3144405221 in words is "three billion, one hundred forty-four million, four hundred five thousand, two hundred twenty-one".