20031331002 has 16 divisors (see below), whose sum is σ = 40072678560. Its totient is φ = 6675440912.

The previous prime is 20031330989. The next prime is 20031331003. The reversal of 20031331002 is 20013313002.

It is not an unprimeable number, because it can be changed into a prime (20031331003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 391233 + ... + 439460.

It is an arithmetic number, because the mean of its divisors is an integer number (2504542410).

Almost surely, 2^20031331002 is an apocalyptic number.

20031331002 is an abundant number, since it is smaller than the sum of its proper divisors (20041347558).

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

20031331002 is a wasteful number, since it uses less digits than its factorization.

20031331002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834717.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 20031331002 its reverse (20013313002), we get a palindrome (40044644004).

The spelling of 20031331002 in words is "twenty billion, thirty-one million, three hundred thirty-one thousand, two".