10323331220 has 12 divisors (see below), whose sum is σ = 21678995604. Its totient is φ = 4129332480.

The previous prime is 10323331147. The next prime is 10323331273. The reversal of 10323331220 is 2213332301.

It can be written as a sum of positive squares in 2 ways, for example, as 3657588484 + 6665742736 = 60478^2 + 81644^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 516166561 = 10323331220 / (1 + 0 + 3 + 2 + 3 + 3 + 3 + 1 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 10323331192 and 10323331201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258083261 + ... + 258083300.

It is an arithmetic number, because the mean of its divisors is an integer number (1806582967).

Almost surely, 2^10323331220 is an apocalyptic number.

10323331220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10323331220 is an abundant number, since it is smaller than the sum of its proper divisors (11355664384).

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

10323331220 is a wasteful number, since it uses less digits than its factorization.

10323331220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516166570 (or 516166568 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 10323331220 its reverse (2213332301), we get a palindrome (12536663521).

The spelling of 10323331220 in words is "ten billion, three hundred twenty-three million, three hundred thirty-one thousand, two hundred twenty".