1001131233020 has 24 divisors (see below), whose sum is σ = 2114528056704. Its totient is φ = 398137737536.

The previous prime is 1001131233019. The next prime is 1001131233083. The reversal of 1001131233020 is 203321311001.

It is a self number, because there is not a number n which added to its sum of digits gives 1001131233020.

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 7 ways as a sum of consecutive naturals, for example, 144668684 + ... + 144675603.

It is an arithmetic number, because the mean of its divisors is an integer number (88105335696).

Almost surely, 2^{1001131233020} is an apocalyptic number.

1001131233020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001131233020 is an abundant number, since it is smaller than the sum of its proper divisors (1113396823684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1001131233020 is a wasteful number, since it uses less digits than its factorization.

1001131233020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289344469 (or 289344467 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 1001131233020 its reverse (203321311001), we get a palindrome (1204452544021).

The spelling of 1001131233020 in words is "one trillion, one billion, one hundred thirty-one million, two hundred thirty-three thousand, twenty".