3143621 has 4 divisors (see below), whose sum is σ = 3385452. Its totient is φ = 2901792.

The previous prime is 3143587. The next prime is 3143641. The reversal of 3143621 is 1263413.

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 923521 + 2220100 = 961^2 + 1490^2 .

It is a cyclic number.

It is not a de Polignac number, because 3143621 - 2¹⁴ = 3127237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3143593 and 3143602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3143641) 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, 120896 + ... + 120921.

It is an arithmetic number, because the mean of its divisors is an integer number (846363).

Almost surely, 2^3143621 is an apocalyptic number.

It is an amenable number.

3143621 is a deficient number, since it is larger than the sum of its proper divisors (241831).

3143621 is a wasteful number, since it uses less digits than its factorization.

3143621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241830.

The product of its digits is 432, while the sum is 20.

The square root of 3143621 is about 1773.0259445366. The cubic root of 3143621 is about 146.4907020778.

The spelling of 3143621 in words is "three million, one hundred forty-three thousand, six hundred twenty-one".