20131000332 has 96 divisors (see below), whose sum is σ = 50161047552. Its totient is φ = 6269024256.

The previous prime is 20131000321. The next prime is 20131000349. The reversal of 20131000332 is 23300013102.

It is a super-2 number, since 2×20131000332² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7691088 + ... + 7693704.

It is an arithmetic number, because the mean of its divisors is an integer number (522510912).

Almost surely, 2^20131000332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20131000332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25080523776).

20131000332 is an abundant number, since it is smaller than the sum of its proper divisors (30030047220).

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

20131000332 is a wasteful number, since it uses less digits than its factorization.

20131000332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3287 (or 3285 counting only the distinct ones).

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

Adding to 20131000332 its reverse (23300013102), we get a palindrome (43431013434).

The spelling of 20131000332 in words is "twenty billion, one hundred thirty-one million, three hundred thirty-two", and thus it is an aban number.