802031987 has 8 divisors (see below), whose sum is σ = 825594336. Its totient is φ = 778781952.

The previous prime is 802031981. The next prime is 802032053. The reversal of 802031987 is 789130208.

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 802031987 - 2¹⁰ = 802030963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 802031987.

It is not an unprimeable number, because it can be changed into a prime (802031981) 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, 72863 + ... + 83144.

It is an arithmetic number, because the mean of its divisors is an integer number (103199292).

Almost surely, 2^802031987 is an apocalyptic number.

802031987 is a deficient number, since it is larger than the sum of its proper divisors (23562349).

802031987 is a wasteful number, since it uses less digits than its factorization.

802031987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156157.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 802031987 is about 28320.1692614998. The cubic root of 802031987 is about 929.1030728898.

The spelling of 802031987 in words is "eight hundred two million, thirty-one thousand, nine hundred eighty-seven".