20313331320 has 64 divisors (see below), whose sum is σ = 61259120640. Its totient is φ = 5388521600.

The previous prime is 20313331301. The next prime is 20313331361. The reversal of 20313331320 is 2313331302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 420216 + ... + 466055.

It is an arithmetic number, because the mean of its divisors is an integer number (957173760).

Almost surely, 2^20313331320 is an apocalyptic number.

20313331320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20313331320 is an abundant number, since it is smaller than the sum of its proper divisors (40945789320).

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

20313331320 is a wasteful number, since it uses less digits than its factorization.

20313331320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886476 (or 886472 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 20313331320 its reverse (2313331302), we get a palindrome (22626662622).

The spelling of 20313331320 in words is "twenty billion, three hundred thirteen million, three hundred thirty-one thousand, three hundred twenty".