1011143231001 has 48 divisors (see below), whose sum is σ = 1506061578112. Its totient is φ = 653421945600.

The previous prime is 1011143230997. The next prime is 1011143231039. The reversal of 1011143231001 is 1001323411101.

It is a happy number.

It is not a de Polignac number, because 1011143231001 - 2² = 1011143230997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011143231041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51729636 + ... + 51749178.

Almost surely, 2^{1011143231001} is an apocalyptic number.

It is an amenable number.

1011143231001 is a deficient number, since it is larger than the sum of its proper divisors (494918347111).

1011143231001 is a wasteful number, since it uses less digits than its factorization.

1011143231001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20974 (or 20971 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1011143231001 its reverse (1001323411101), we get a palindrome (2012466642102).

The spelling of 1011143231001 in words is "one trillion, eleven billion, one hundred forty-three million, two hundred thirty-one thousand, one".