2581388131 has 8 divisors (see below), whose sum is σ = 2968258304. Its totient is φ = 2199043080.

The previous prime is 2581388087. The next prime is 2581388209. The reversal of 2581388131 is 1318831852.

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 2581388131 - 2¹¹ = 2581386083 is a prime.

It is a super-2 number, since 2×2581388131² = 13327129365735346322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2581382131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1130055 + ... + 1132336.

It is an arithmetic number, because the mean of its divisors is an integer number (371032288).

Almost surely, 2^2581388131 is an apocalyptic number.

2581388131 is a deficient number, since it is larger than the sum of its proper divisors (386870173).

2581388131 is a wasteful number, since it uses less digits than its factorization.

2581388131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2262561.

The product of its digits is 46080, while the sum is 40.

The square root of 2581388131 is about 50807.3629605001. The cubic root of 2581388131 is about 1371.7799038563.

The spelling of 2581388131 in words is "two billion, five hundred eighty-one million, three hundred eighty-eight thousand, one hundred thirty-one".