231030122020 has 24 divisors (see below), whose sum is σ = 493386364800. Its totient is φ = 90845742432.

The previous prime is 231030121981. The next prime is 231030122021. The reversal of 231030122020 is 20221030132.

It is a junction number, because it is equal to n+sod(n) for n = 231030121985 and 231030122003.

It is not an unprimeable number, because it can be changed into a prime (231030122021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97892940 + ... + 97895299.

It is an arithmetic number, because the mean of its divisors is an integer number (20557765200).

Almost surely, 2^231030122020 is an apocalyptic number.

231030122020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231030122020 is an abundant number, since it is smaller than the sum of its proper divisors (262356242780).

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

231030122020 is a wasteful number, since it uses less digits than its factorization.

231030122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195788307 (or 195788305 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 231030122020 its reverse (20221030132), we get a palindrome (251251152152).

The spelling of 231030122020 in words is "two hundred thirty-one billion, thirty million, one hundred twenty-two thousand, twenty".