2131543534 has 8 divisors (see below), whose sum is σ = 3198452400. Its totient is φ = 1065392736.

The previous prime is 2131543517. The next prime is 2131543567. The reversal of 2131543534 is 4353451312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2131543496 and 2131543505.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182434 + ... + 193765.

It is an arithmetic number, because the mean of its divisors is an integer number (399806550).

Almost surely, 2^2131543534 is an apocalyptic number.

2131543534 is a deficient number, since it is larger than the sum of its proper divisors (1066908866).

2131543534 is a wasteful number, since it uses less digits than its factorization.

2131543534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379034.

The product of its digits is 21600, while the sum is 31.

The square root of 2131543534 is about 46168.6423235512. The cubic root of 2131543534 is about 1286.9590720289.

Adding to 2131543534 its reverse (4353451312), we get a palindrome (6484994846).

The spelling of 2131543534 in words is "two billion, one hundred thirty-one million, five hundred forty-three thousand, five hundred thirty-four".