2143003531 has 4 divisors (see below), whose sum is σ = 2145420432. Its totient is φ = 2140586632.

The previous prime is 2143003519. The next prime is 2143003567. The reversal of 2143003531 is 1353003412.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2143003531 is a prime.

It is a super-2 number, since 2×2143003531² = 9184928267756935922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143003501) 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, 1207120 + ... + 1208893.

It is an arithmetic number, because the mean of its divisors is an integer number (536355108).

Almost surely, 2^2143003531 is an apocalyptic number.

2143003531 is a deficient number, since it is larger than the sum of its proper divisors (2416901).

2143003531 is an equidigital number, since it uses as much as digits as its factorization.

2143003531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2416900.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 2143003531 is about 46292.5861342829. The cubic root of 2143003531 is about 1289.2613464527.

Adding to 2143003531 its reverse (1353003412), we get a palindrome (3496006943).

The spelling of 2143003531 in words is "two billion, one hundred forty-three million, three thousand, five hundred thirty-one".