20031503316 has 96 divisors (see below), whose sum is σ = 51728785920. Its totient is φ = 5982672000.

The previous prime is 20031503273. The next prime is 20031503339. The reversal of 20031503316 is 61330513002.

It is a happy number.

It is a super-2 number, since 2×20031503316² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3023055 + ... + 3029673.

It is an arithmetic number, because the mean of its divisors is an integer number (538841520).

Almost surely, 2^20031503316 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 20031503316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25864392960).

20031503316 is an abundant number, since it is smaller than the sum of its proper divisors (31697282604).

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

20031503316 is a wasteful number, since it uses less digits than its factorization.

20031503316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6965 (or 6963 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 24.

The spelling of 20031503316 in words is "twenty billion, thirty-one million, five hundred three thousand, three hundred sixteen".