6131359809 has 27 divisors (see below), whose sum is σ = 9082123713. Its totient is φ = 3985935912.

The previous prime is 6131359783. The next prime is 6131359837. The reversal of 6131359809 is 9089531316.

The square root of 6131359809 is 78303.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 6131359809 - 2⁵ = 6131359777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6131369809) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 10100784 + ... + 10101390.

Almost surely, 2^6131359809 is an apocalyptic number.

6131359809 is the 78303-rd square number.

6131359809 is the 39152-nd centered octagonal number.

It is an amenable number.

6131359809 is a deficient number, since it is larger than the sum of its proper divisors (2950763904).

6131359809 is an frugal number, since it uses more digits than its factorization.

6131359809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306 (or 653 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The cubic root of 6131359809 is about 1830.2859008657.

It can be divided in two parts, 6131 and 359809, that added together give a triangular number (365940 = T₈₅₅).

The spelling of 6131359809 in words is "six billion, one hundred thirty-one million, three hundred fifty-nine thousand, eight hundred nine".