2143512533 has 4 divisors (see below), whose sum is σ = 2149483680. Its totient is φ = 2137541388.

The previous prime is 2143512529. The next prime is 2143512551. The reversal of 2143512533 is 3352153412.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2143512533 - 2² = 2143512529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2143512496 and 2143512505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143512523) 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, 2985035 + ... + 2985752.

It is an arithmetic number, because the mean of its divisors is an integer number (537370920).

Almost surely, 2^2143512533 is an apocalyptic number.

It is an amenable number.

2143512533 is a deficient number, since it is larger than the sum of its proper divisors (5971147).

2143512533 is an equidigital number, since it uses as much as digits as its factorization.

2143512533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5971146.

The product of its digits is 10800, while the sum is 29.

The square root of 2143512533 is about 46298.0834700531. The cubic root of 2143512533 is about 1289.3634126486.

Adding to 2143512533 its reverse (3352153412), we get a palindrome (5495665945).

The spelling of 2143512533 in words is "two billion, one hundred forty-three million, five hundred twelve thousand, five hundred thirty-three".