3143643 has 4 divisors (see below), whose sum is σ = 4191528. Its totient is φ = 2095760.

The previous prime is 3143641. The next prime is 3143671. The reversal of 3143643 is 3463413.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3143643 - 2¹ = 3143641 is a prime.

It is a super-2 number, since 2×3143643² = 19764982622898, which contains 22 as substring.

It is a D-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, 523938 + ... + 523943.

It is an arithmetic number, because the mean of its divisors is an integer number (1047882).

Almost surely, 2^3143643 is an apocalyptic number.

3143643 is a deficient number, since it is larger than the sum of its proper divisors (1047885).

3143643 is a wasteful number, since it uses less digits than its factorization.

3143643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047884.

The product of its digits is 2592, while the sum is 24.

The square root of 3143643 is about 1773.0321486087. The cubic root of 3143643 is about 146.4910438055.

The spelling of 3143643 in words is "three million, one hundred forty-three thousand, six hundred forty-three".