1011543234321 has 8 divisors (see below), whose sum is σ = 1385176321024. Its totient is φ = 656136151920.

The previous prime is 1011543234319. The next prime is 1011543234371. The reversal of 1011543234321 is 1234323451101.

1011543234321 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1011543234321 - 2¹ = 1011543234319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011543234371) 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, 4556500945 + ... + 4556501166.

It is an arithmetic number, because the mean of its divisors is an integer number (173147040128).

Almost surely, 2^{1011543234321} is an apocalyptic number.

It is an amenable number.

1011543234321 is a deficient number, since it is larger than the sum of its proper divisors (373633086703).

1011543234321 is an equidigital number, since it uses as much as digits as its factorization.

1011543234321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9113002151.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 1011543234321 its reverse (1234323451101), we get a palindrome (2245866685422).

The spelling of 1011543234321 in words is "one trillion, eleven billion, five hundred forty-three million, two hundred thirty-four thousand, three hundred twenty-one".