2131143530 has 16 divisors (see below), whose sum is σ = 3846186720. Its totient is φ = 850206672.

The previous prime is 2131143529. The next prime is 2131143533. The reversal of 2131143530 is 353411312.

It is a junction number, because it is equal to n+sod(n) for n = 2131143496 and 2131143505.

It is not an unprimeable number, because it can be changed into a prime (2131143533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277364 + ... + 284943.

It is an arithmetic number, because the mean of its divisors is an integer number (240386670).

Almost surely, 2^2131143530 is an apocalyptic number.

2131143530 is a deficient number, since it is larger than the sum of its proper divisors (1715043190).

2131143530 is a wasteful number, since it uses less digits than its factorization.

2131143530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562693.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 2131143530 is about 46164.3101323956. The cubic root of 2131143530 is about 1286.8785637066.

Adding to 2131143530 its reverse (353411312), we get a palindrome (2484554842).

The spelling of 2131143530 in words is "two billion, one hundred thirty-one million, one hundred forty-three thousand, five hundred thirty".