3115534140 has 72 divisors (see below), whose sum is σ = 9492210000. Its totient is φ = 827138304.

The previous prime is 3115534111. The next prime is 3115534141. The reversal of 3115534140 is 414355113.

It is a happy number.

3115534140 is a `hidden beast` number, since 3 + 115 + 534 + 14 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3115534141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2736 + ... + 78984.

It is an arithmetic number, because the mean of its divisors is an integer number (131836250).

Almost surely, 2^3115534140 is an apocalyptic number.

3115534140 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 3115534140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4746105000).

3115534140 is an abundant number, since it is smaller than the sum of its proper divisors (6376675860).

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

3115534140 is a wasteful number, since it uses less digits than its factorization.

3115534140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76491 (or 76486 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 3115534140 is about 55816.9700001711. The cubic root of 3115534140 is about 1460.5311978389.

Adding to 3115534140 its reverse (414355113), we get a palindrome (3529889253).

The spelling of 3115534140 in words is "three billion, one hundred fifteen million, five hundred thirty-four thousand, one hundred forty".