6131489281 has 8 divisors (see below), whose sum is σ = 6251644800. Its totient is φ = 6011499312.

The previous prime is 6131489209. The next prime is 6131489291. The reversal of 6131489281 is 1829841316.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6131489281 - 2¹⁹ = 6130964993 is a prime.

It is a super-2 number, since 2×6131489281² = 75190321606035793922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6131489291) 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, 34770 + ... + 116068.

It is an arithmetic number, because the mean of its divisors is an integer number (781455600).

Almost surely, 2^6131489281 is an apocalyptic number.

It is an amenable number.

6131489281 is a deficient number, since it is larger than the sum of its proper divisors (120155519).

6131489281 is a wasteful number, since it uses less digits than its factorization.

6131489281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82775.

The product of its digits is 82944, while the sum is 43.

The square root of 6131489281 is about 78303.8267327977. The cubic root of 6131489281 is about 1830.2987837670.

The spelling of 6131489281 in words is "six billion, one hundred thirty-one million, four hundred eighty-nine thousand, two hundred eighty-one".