2491027131 has 8 divisors (see below), whose sum is σ = 3363412480. Its totient is φ = 1639663272.

The previous prime is 2491027127. The next prime is 2491027139. The reversal of 2491027131 is 1317201942.

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

It is not a de Polignac number, because 2491027131 - 2² = 2491027127 is a prime.

It is a super-2 number, since 2×2491027131² = 12410432334756182322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2491027139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5255095 + ... + 5255568.

It is an arithmetic number, because the mean of its divisors is an integer number (420426560).

Almost surely, 2^2491027131 is an apocalyptic number.

2491027131 is a deficient number, since it is larger than the sum of its proper divisors (872385349).

2491027131 is a wasteful number, since it uses less digits than its factorization.

2491027131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10510745.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 2491027131 is about 49910.1906528116. The cubic root of 2491027131 is about 1355.5831208870.

The spelling of 2491027131 in words is "two billion, four hundred ninety-one million, twenty-seven thousand, one hundred thirty-one".