1304231320 has 128 divisors (see below), whose sum is σ = 3472035840. Its totient is φ = 431631360.

The previous prime is 1304231317. The next prime is 1304231339. The reversal of 1304231320 is 231324031.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1181889 + ... + 1182991.

It is an arithmetic number, because the mean of its divisors is an integer number (27125280).

Almost surely, 2^1304231320 is an apocalyptic number.

1304231320 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 1304231320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1736017920).

1304231320 is an abundant number, since it is smaller than the sum of its proper divisors (2167804520).

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

1304231320 is a wasteful number, since it uses less digits than its factorization.

1304231320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265 (or 1261 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1304231320 is about 36114.1429359745. The cubic root of 1304231320 is about 1092.5757115796.

Adding to 1304231320 its reverse (231324031), we get a palindrome (1535555351).

The spelling of 1304231320 in words is "one billion, three hundred four million, two hundred thirty-one thousand, three hundred twenty".