1011043543531 has 8 divisors (see below), whose sum is σ = 1155531462624. Its totient is φ = 866568906240.

The previous prime is 1011043543513. The next prime is 1011043543537. The reversal of 1011043543531 is 1353453401101.

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

It is a cyclic number.

It is not a de Polignac number, because 1011043543531 - 2⁹ = 1011043543019 is a prime.

It is a super-2 number, since 2×1011043543531² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1011043543493 and 1011043543502.

It is not an unprimeable number, because it can be changed into a prime (1011043543537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3156790 + ... + 3462283.

It is an arithmetic number, because the mean of its divisors is an integer number (144441432828).

Almost surely, 2^{1011043543531} is an apocalyptic number.

1011043543531 is a deficient number, since it is larger than the sum of its proper divisors (144487919093).

1011043543531 is an equidigital number, since it uses as much as digits as its factorization.

1011043543531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6640901.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 1011043543531 its reverse (1353453401101), we get a palindrome (2364496944632).

The spelling of 1011043543531 in words is "one trillion, eleven billion, forty-three million, five hundred forty-three thousand, five hundred thirty-one".