2143502530 has 16 divisors (see below), whose sum is σ = 4155097464. Its totient is φ = 791447040.

The previous prime is 2143502521. The next prime is 2143502561. The reversal of 2143502530 is 352053412.

It can be written as a sum of positive squares in 4 ways, for example, as 1719677961 + 423824569 = 41469^2 + 20587^2 .

It is a super-2 number, since 2×2143502530² = 9189206192232801800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2143502495 and 2143502504.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8244111 + ... + 8244370.

Almost surely, 2^2143502530 is an apocalyptic number.

2143502530 is a deficient number, since it is larger than the sum of its proper divisors (2011594934).

2143502530 is a wasteful number, since it uses less digits than its factorization.

2143502530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16488501.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 2143502530 is about 46297.9754416972. The cubic root of 2143502530 is about 1289.3614069808.

Adding to 2143502530 its reverse (352053412), we get a palindrome (2495555942).

The spelling of 2143502530 in words is "two billion, one hundred forty-three million, five hundred two thousand, five hundred thirty".