3143241220 has 72 divisors (see below), whose sum is σ = 7865870040. Its totient is φ = 1051384320.

The previous prime is 3143241191. The next prime is 3143241221. The reversal of 3143241220 is 221423413.

It can be written as a sum of positive squares in 4 ways, for example, as 88247236 + 3054993984 = 9394^2 + 55272^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3143241191 and 3143241200.

It is not an unprimeable number, because it can be changed into a prime (3143241221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1066 + ... + 79294.

It is an arithmetic number, because the mean of its divisors is an integer number (109248195).

Almost surely, 2^3143241220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3143241220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3932935020).

3143241220 is an abundant number, since it is smaller than the sum of its proper divisors (4722628820).

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

3143241220 is a wasteful number, since it uses less digits than its factorization.

3143241220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78293 (or 78284 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 3143241220 is about 56064.6164706404. The cubic root of 3143241220 is about 1464.8480267287.

Adding to 3143241220 its reverse (221423413), we get a palindrome (3364664633).

The spelling of 3143241220 in words is "three billion, one hundred forty-three million, two hundred forty-one thousand, two hundred twenty".