3145333220 has 12 divisors (see below), whose sum is σ = 6605199804. Its totient is φ = 1258133280.

The previous prime is 3145333189. The next prime is 3145333273. The reversal of 3145333220 is 223335413.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1822265344 + 1323067876 = 42688^2 + 36374^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3145333220.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78633311 + ... + 78633350.

It is an arithmetic number, because the mean of its divisors is an integer number (550433317).

Almost surely, 2^3145333220 is an apocalyptic number.

It is an amenable number.

3145333220 is an abundant number, since it is smaller than the sum of its proper divisors (3459866584).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3145333220 is a wasteful number, since it uses less digits than its factorization.

3145333220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157266670 (or 157266668 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 26.

The square root of 3145333220 is about 56083.2704110593. The cubic root of 3145333220 is about 1465.1729336483.

Adding to 3145333220 its reverse (223335413), we get a palindrome (3368668633).

The spelling of 3145333220 in words is "three billion, one hundred forty-five million, three hundred thirty-three thousand, two hundred twenty".