20031310323220 has 48 divisors (see below), whose sum is σ = 48200667475968. Its totient is φ = 6849946010880.

The previous prime is 20031310323217. The next prime is 20031310323259. The reversal of 20031310323220 is 2232301313002.

It is a junction number, because it is equal to n+sod(n) for n = 20031310323191 and 20031310323200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186735921 + ... + 186843160.

It is an arithmetic number, because the mean of its divisors is an integer number (1004180572416).

Almost surely, 2^{20031310323220} is an apocalyptic number.

20031310323220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20031310323220 is an abundant number, since it is smaller than the sum of its proper divisors (28169357152748).

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

20031310323220 is a wasteful number, since it uses less digits than its factorization.

20031310323220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373579480 (or 373579478 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 20031310323220 its reverse (2232301313002), we get a palindrome (22263611636222).

The spelling of 20031310323220 in words is "twenty trillion, thirty-one billion, three hundred ten million, three hundred twenty-three thousand, two hundred twenty".