231310022020 has 96 divisors (see below), whose sum is σ = 605730537216. Its totient is φ = 72082483200.

The previous prime is 231310021967. The next prime is 231310022023. The reversal of 231310022020 is 20220013132.

It is a junction number, because it is equal to n+sod(n) for n = 231310021985 and 231310022003.

It is not an unprimeable number, because it can be changed into a prime (231310022023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10080160 + ... + 10103080.

It is an arithmetic number, because the mean of its divisors is an integer number (6309693096).

Almost surely, 2^231310022020 is an apocalyptic number.

231310022020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231310022020 is an abundant number, since it is smaller than the sum of its proper divisors (374420515196).

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

231310022020 is a wasteful number, since it uses less digits than its factorization.

231310022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29501 (or 29499 counting only the distinct ones).

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

Adding to 231310022020 its reverse (20220013132), we get a palindrome (251530035152).

The spelling of 231310022020 in words is "two hundred thirty-one billion, three hundred ten million, twenty-two thousand, twenty".