33031421040 has 80 divisors (see below), whose sum is σ = 103336912800. Its totient is φ = 8727561216.

The previous prime is 33031421023. The next prime is 33031421117. The reversal of 33031421040 is 4012413033.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 33031420998 and 33031421016.

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 15 ways as a sum of consecutive naturals, for example, 605175 + ... + 657494.

It is an arithmetic number, because the mean of its divisors is an integer number (1291711410).

Almost surely, 2^33031421040 is an apocalyptic number.

33031421040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33031421040 is an abundant number, since it is smaller than the sum of its proper divisors (70305491760).

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

33031421040 is a wasteful number, since it uses less digits than its factorization.

33031421040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262794 (or 1262788 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 33031421040 its reverse (4012413033), we get a palindrome (37043834073).

The spelling of 33031421040 in words is "thirty-three billion, thirty-one million, four hundred twenty-one thousand, forty".