231022020 has 48 divisors (see below), whose sum is σ = 647535168. Its totient is φ = 61541760.

The previous prime is 231022009. The next prime is 231022039. The reversal of 231022020 is 20220132.

231022020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 231021987 and 231022005.

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, 94615 + ... + 97025.

It is an arithmetic number, because the mean of its divisors is an integer number (13490316).

Almost surely, 2^231022020 is an apocalyptic number.

231022020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231022020 is an abundant number, since it is smaller than the sum of its proper divisors (416513148).

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

231022020 is a wasteful number, since it uses less digits than its factorization.

231022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4020 (or 4018 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 231022020 is about 15199.4085411242. The cubic root of 231022020 is about 613.5987397608.

Adding to 231022020 its reverse (20220132), we get a palindrome (251242152).

The spelling of 231022020 in words is "two hundred thirty-one million, twenty-two thousand, twenty".