1002011031231 has 48 divisors (see below), whose sum is σ = 1558457731584. Its totient is φ = 570988244736.

The previous prime is 1002011031187. The next prime is 1002011031233. The reversal of 1002011031231 is 1321301102001.

It is a happy number.

It is not a de Polignac number, because 1002011031231 - 2²⁹ = 1001474160319 is a prime.

It is a super-2 number, since 2×1002011031231² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1002011031231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002011031233) 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 47 ways as a sum of consecutive naturals, for example, 209491866 + ... + 209496648.

It is an arithmetic number, because the mean of its divisors is an integer number (32467869408).

Almost surely, 2^{1002011031231} is an apocalyptic number.

1002011031231 is a deficient number, since it is larger than the sum of its proper divisors (556446700353).

1002011031231 is a wasteful number, since it uses less digits than its factorization.

1002011031231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8460 (or 8453 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1002011031231 its reverse (1321301102001), we get a palindrome (2323312133232).

The spelling of 1002011031231 in words is "one trillion, two billion, eleven million, thirty-one thousand, two hundred thirty-one".