2315722320 has 360 divisors, whose sum is σ = 8551595520. Its totient is φ = 560885760.

The previous prime is 2315722291. The next prime is 2315722333. The reversal of 2315722320 is 232275132.

It is a happy number.

2315722320 is a `hidden beast` number, since 2 + 315 + 7 + 22 + 320 = 666.

It is a tau number, because it is divible by the number of its divisors (360).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 6450301 + ... + 6450659.

It is an arithmetic number, because the mean of its divisors is an integer number (23754432).

Almost surely, 2^2315722320 is an apocalyptic number.

2315722320 is a gapful number since it is divisible by the number (20) 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 2315722320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4275797760).

2315722320 is an abundant number, since it is smaller than the sum of its proper divisors (6235873200).

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

2315722320 is a wasteful number, since it uses less digits than its factorization.

2315722320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 2315722320 is about 48121.9525788387. The cubic root of 2315722320 is about 1323.0070563500.

Adding to 2315722320 its reverse (232275132), we get a palindrome (2547997452).

The spelling of 2315722320 in words is "two billion, three hundred fifteen million, seven hundred twenty-two thousand, three hundred twenty".