3143212021 has 4 divisors (see below), whose sum is σ = 3178529100. Its totient is φ = 3107894944.

The previous prime is 3143212003. The next prime is 3143212031. The reversal of 3143212021 is 1202123413.

It is a happy number.

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 1029511396 + 2113700625 = 32086^2 + 45975^2 .

It is a cyclic number.

It is not a de Polignac number, because 3143212021 - 2⁵ = 3143211989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3143212021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3143212031) 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, 17658406 + ... + 17658583.

It is an arithmetic number, because the mean of its divisors is an integer number (794632275).

Almost surely, 2^3143212021 is an apocalyptic number.

It is an amenable number.

3143212021 is a deficient number, since it is larger than the sum of its proper divisors (35317079).

3143212021 is an equidigital number, since it uses as much as digits as its factorization.

3143212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35317078.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 3143212021 is about 56064.3560651507. The cubic root of 3143212021 is about 1464.8434908343.

Adding to 3143212021 its reverse (1202123413), we get a palindrome (4345335434).

The spelling of 3143212021 in words is "three billion, one hundred forty-three million, two hundred twelve thousand, twenty-one".