20303031320 has 192 divisors, whose sum is σ = 57140886240. Its totient is φ = 6413721600.

The previous prime is 20303031313. The next prime is 20303031361. The reversal of 20303031320 is 2313030302.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1256090 + ... + 1272150.

Almost surely, 2^20303031320 is an apocalyptic number.

20303031320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20303031320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28570443120).

20303031320 is an abundant number, since it is smaller than the sum of its proper divisors (36837854920).

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

20303031320 is a wasteful number, since it uses less digits than its factorization.

20303031320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16126 (or 16109 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 17.

Adding to 20303031320 its reverse (2313030302), we get a palindrome (22616061622).

The spelling of 20303031320 in words is "twenty billion, three hundred three million, thirty-one thousand, three hundred twenty".