32031000021 has 8 divisors (see below), whose sum is σ = 43408131424. Its totient is φ = 21003934320.

The previous prime is 32031000019. The next prime is 32031000101. The reversal of 32031000021 is 12000013023.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 32031000021 - 2¹ = 32031000019 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 32030999970 and 32031000006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32031008021) by changing a digit.

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, 87516211 + ... + 87516576.

It is an arithmetic number, because the mean of its divisors is an integer number (5426016428).

Almost surely, 2^32031000021 is an apocalyptic number.

It is an amenable number.

32031000021 is a deficient number, since it is larger than the sum of its proper divisors (11377131403).

32031000021 is a wasteful number, since it uses less digits than its factorization.

32031000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175032851.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 32031000021 its reverse (12000013023), we get a palindrome (44031013044).

The spelling of 32031000021 in words is "thirty-two billion, thirty-one million, twenty-one", and thus it is an aban number and an uban number.