10320143220 has 36 divisors (see below), whose sum is σ = 31304434980. Its totient is φ = 2752038144.

The previous prime is 10320143219. The next prime is 10320143221. The reversal of 10320143220 is 2234102301.

10320143220 is a `hidden beast` number, since 10 + 3 + 201 + 432 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (10320143219) and next prime (10320143221).

It can be written as a sum of positive squares in 2 ways, for example, as 6782510736 + 3537632484 = 82356^2 + 59478^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 = 10320143193 and 10320143202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10320143221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28666885 + ... + 28667244.

Almost surely, 2^10320143220 is an apocalyptic number.

10320143220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10320143220 is an abundant number, since it is smaller than the sum of its proper divisors (20984291760).

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

10320143220 is a wasteful number, since it uses less digits than its factorization.

10320143220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57334144 (or 57334139 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 10320143220 its reverse (2234102301), we get a palindrome (12554245521).

The spelling of 10320143220 in words is "ten billion, three hundred twenty million, one hundred forty-three thousand, two hundred twenty".