2131310987 has 8 divisors (see below), whose sum is σ = 2296606704. Its totient is φ = 1966207968.

The previous prime is 2131310983. The next prime is 2131310999. The reversal of 2131310987 is 7890131312.

It is a happy number.

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 2131310987 - 2² = 2131310983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131310981) 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, 24773 + ... + 69830.

It is an arithmetic number, because the mean of its divisors is an integer number (287075838).

Almost surely, 2^2131310987 is an apocalyptic number.

2131310987 is a deficient number, since it is larger than the sum of its proper divisors (165295717).

2131310987 is a wasteful number, since it uses less digits than its factorization.

2131310987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96349.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 2131310987 is about 46166.1238030658. The cubic root of 2131310987 is about 1286.9122688007.

The spelling of 2131310987 in words is "two billion, one hundred thirty-one million, three hundred ten thousand, nine hundred eighty-seven".