6430131587 has 4 divisors (see below), whose sum is σ = 7014689016. Its totient is φ = 5845574160.

The previous prime is 6430131559. The next prime is 6430131599. The reversal of 6430131587 is 7851310346.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6430131587 is a prime.

It is a super-2 number, since 2×6430131587² = 82693184452270277138, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6430131587.

It is not an unprimeable number, because it can be changed into a prime (6430131787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 292278698 + ... + 292278719.

It is an arithmetic number, because the mean of its divisors is an integer number (1753672254).

Almost surely, 2^6430131587 is an apocalyptic number.

6430131587 is a deficient number, since it is larger than the sum of its proper divisors (584557429).

6430131587 is a wasteful number, since it uses less digits than its factorization.

6430131587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584557428.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 6430131587 is about 80188.1012806763. The cubic root of 6430131587 is about 1859.5446901685.

The spelling of 6430131587 in words is "six billion, four hundred thirty million, one hundred thirty-one thousand, five hundred eighty-seven".