10231331220 has 72 divisors (see below), whose sum is σ = 33856411680. Its totient is φ = 2480322240.

The previous prime is 10231331213. The next prime is 10231331249. The reversal of 10231331220 is 2213313201.

10231331220 is a `hidden beast` number, since 102 + 313 + 31 + 220 = 666.

10231331220 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 (18).

It is a junction number, because it is equal to n+sod(n) for n = 10231331193 and 10231331202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2581690 + ... + 2585649.

It is an arithmetic number, because the mean of its divisors is an integer number (470227940).

Almost surely, 2^10231331220 is an apocalyptic number.

10231331220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10231331220 is an abundant number, since it is smaller than the sum of its proper divisors (23625080460).

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

10231331220 is a wasteful number, since it uses less digits than its factorization.

10231331220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5167365 (or 5167360 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 10231331220 its reverse (2213313201), we get a palindrome (12444644421).

The spelling of 10231331220 in words is "ten billion, two hundred thirty-one million, three hundred thirty-one thousand, two hundred twenty".