3145221343 has 12 divisors (see below), whose sum is σ = 3545415144. Its totient is φ = 2767047600.

The previous prime is 3145221329. The next prime is 3145221353. The reversal of 3145221343 is 3431225413.

It is a happy number.

It is not a de Polignac number, because 3145221343 - 2⁹ = 3145220831 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 (3145221353) 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 11 ways as a sum of consecutive naturals, for example, 138196 + ... + 159337.

It is an arithmetic number, because the mean of its divisors is an integer number (295451262).

Almost surely, 2^3145221343 is an apocalyptic number.

3145221343 is a deficient number, since it is larger than the sum of its proper divisors (400193801).

3145221343 is a wasteful number, since it uses less digits than its factorization.

3145221343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297606 (or 297575 counting only the distinct ones).

The product of its digits is 8640, while the sum is 28.

The square root of 3145221343 is about 56082.2729835373. The cubic root of 3145221343 is about 1465.1555617638.

Adding to 3145221343 its reverse (3431225413), we get a palindrome (6576446756).

The spelling of 3145221343 in words is "three billion, one hundred forty-five million, two hundred twenty-one thousand, three hundred forty-three".