5131143540 has 72 divisors (see below), whose sum is σ = 15570828000. Its totient is φ = 1367745984.

The previous prime is 5131143503. The next prime is 5131143547. The reversal of 5131143540 is 453411315.

It is a happy number.

5131143540 is a `hidden beast` number, since 5 + 1 + 3 + 114 + 3 + 540 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5131143547) 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, 625747 + ... + 633893.

It is an arithmetic number, because the mean of its divisors is an integer number (216261500).

Almost surely, 2^5131143540 is an apocalyptic number.

It is an amenable number.

5131143540 is an abundant number, since it is smaller than the sum of its proper divisors (10439684460).

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

5131143540 is a wasteful number, since it uses less digits than its factorization.

5131143540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11661 (or 11656 counting only the distinct ones).

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

The square root of 5131143540 is about 71632.0008096940. Note that the first 3 decimals coincide. The cubic root of 5131143540 is about 1724.7972641385.

Adding to 5131143540 its reverse (453411315), we get a palindrome (5584554855).

The spelling of 5131143540 in words is "five billion, one hundred thirty-one million, one hundred forty-three thousand, five hundred forty".