231220103310220 has 48 divisors (see below), whose sum is σ = 519424955017920. Its totient is φ = 86150170681344.

The previous prime is 231220103310143. The next prime is 231220103310241. The reversal of 231220103310220 is 22013301022132.

It is a junction number, because it is equal to n+sod(n) for n = 231220103310191 and 231220103310200.

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, 3505426440 + ... + 3505492399.

It is an arithmetic number, because the mean of its divisors is an integer number (10821353229540).

Almost surely, 2^{231220103310220} is an apocalyptic number.

231220103310220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231220103310220 is an abundant number, since it is smaller than the sum of its proper divisors (288204851707700).

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

231220103310220 is a wasteful number, since it uses less digits than its factorization.

231220103310220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7010918962 (or 7010918960 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 231220103310220 its reverse (22013301022132), we get a palindrome (253233404332352).

The spelling of 231220103310220 in words is "two hundred thirty-one trillion, two hundred twenty billion, one hundred three million, three hundred ten thousand, two hundred twenty".