5631131540 has 24 divisors (see below), whose sum is σ = 11940190080. Its totient is φ = 2230583328.

The previous prime is 5631131509. The next prime is 5631131543. The reversal of 5631131540 is 451311365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5631131543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1364720 + ... + 1368839.

It is an arithmetic number, because the mean of its divisors is an integer number (497507920).

Almost surely, 2^5631131540 is an apocalyptic number.

It is an amenable number.

5631131540 is an abundant number, since it is smaller than the sum of its proper divisors (6309058540).

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

5631131540 is a wasteful number, since it uses less digits than its factorization.

5631131540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2733671 (or 2733669 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 5631131540 is about 75040.8657999093. The cubic root of 5631131540 is about 1779.0926171034.

The spelling of 5631131540 in words is "five billion, six hundred thirty-one million, one hundred thirty-one thousand, five hundred forty".