20133031040 has 32 divisors (see below), whose sum is σ = 48130528860. Its totient is φ = 8053212160.

The previous prime is 20133031033. The next prime is 20133031049. The reversal of 20133031040 is 4013033102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18480771136 + 1652259904 = 135944^2 + 40648^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (20133031049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15728291 + ... + 15729570.

Almost surely, 2^20133031040 is an apocalyptic number.

20133031040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20133031040 is an abundant number, since it is smaller than the sum of its proper divisors (27997497820).

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

20133031040 is an equidigital number, since it uses as much as digits as its factorization.

20133031040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31457880 (or 31457868 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20133031040 its reverse (4013033102), we get a palindrome (24146064142).

The spelling of 20133031040 in words is "twenty billion, one hundred thirty-three million, thirty-one thousand, forty".