3157240320 has 480 divisors, whose sum is σ = 12011231232. Its totient is φ = 761757696.

The previous prime is 3157240319. The next prime is 3157240321. The reversal of 3157240320 is 230427513.

3157240320 is a `hidden beast` number, since 31 + 572 + 40 + 3 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (3157240319) and next prime (3157240321).

It is a tau number, because it is divible by the number of its divisors (480).

It is not an unprimeable number, because it can be changed into a prime (3157240321) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24860097 + ... + 24860223.

Almost surely, 2^3157240320 is an apocalyptic number.

3157240320 is a gapful number since it is divisible by the number (30) 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 3157240320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6005615616).

3157240320 is an abundant number, since it is smaller than the sum of its proper divisors (8853990912).

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

3157240320 is a wasteful number, since it uses less digits than its factorization.

3157240320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252 (or 233 counting only the distinct ones).

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

The square root of 3157240320 is about 56189.3256766799. The cubic root of 3157240320 is about 1467.0194780250.

Adding to 3157240320 its reverse (230427513), we get a palindrome (3387667833).

The spelling of 3157240320 in words is "three billion, one hundred fifty-seven million, two hundred forty thousand, three hundred twenty".