1043320320 has 240 divisors, whose sum is σ = 4130137440. Its totient is φ = 238436352.

The previous prime is 1043320303. The next prime is 1043320337. The reversal of 1043320320 is 230233401.

1043320320 is a `hidden beast` number, since 10 + 4 + 332 + 0 + 320 = 666.

1043320320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1043320303) and next prime (1043320337).

It is a tau number, because it is divible by the number of its divisors (240).

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 = 1043320293 and 1043320302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158046 + ... + 164514.

It is an arithmetic number, because the mean of its divisors is an integer number (17208906).

Almost surely, 2^1043320320 is an apocalyptic number.

1043320320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1043320320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2065068720).

1043320320 is an abundant number, since it is smaller than the sum of its proper divisors (3086817120).

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

1043320320 is an equidigital number, since it uses as much as digits as its factorization.

1043320320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6505 (or 6486 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 1043320320 is about 32300.4693464352. The cubic root of 1043320320 is about 1014.2364678483.

Adding to 1043320320 its reverse (230233401), we get a palindrome (1273553721).

The spelling of 1043320320 in words is "one billion, forty-three million, three hundred twenty thousand, three hundred twenty".