320071320 has 48 divisors (see below), whose sum is σ = 1040232960. Its totient is φ = 85352256.

The previous prime is 320071309. The next prime is 320071327. The reversal of 320071320 is 23170023.

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 = 320071293 and 320071302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320071327) 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, 444184 + ... + 444903.

It is an arithmetic number, because the mean of its divisors is an integer number (21671520).

Almost surely, 2^320071320 is an apocalyptic number.

320071320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320071320 is an abundant number, since it is smaller than the sum of its proper divisors (720161640).

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

320071320 is a wasteful number, since it uses less digits than its factorization.

320071320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889104 (or 889097 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 320071320 is about 17890.5371635398. The cubic root of 320071320 is about 684.0411896812.

The spelling of 320071320 in words is "three hundred twenty million, seventy-one thousand, three hundred twenty".